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The correct answer is option 3.

Key Points

• USB port uses thin wires to connect to devices.
• These thin wires are used to transmit data and power between the device and the computer.
• USB ports are designed to be hot-swappable, meaning that devices can be connected and disconnected without having to restart the computer.
• Multiple devices can be connected to a single USB port through the use of a hub.

 Additional Information

• Device: It is too broad and does not provide specific information about the connection method of USB ports.
• Circuit: It is not directly related to the physical connection between USB ports and devices.
• Disk: It is not related to the connection method of USB ports and devices. Disks may be connected to USB ports, but they are not the primary type of device that USB ports are designed to connect to.

The correct answer is F7.

Key Points

• In MS-Word 365, the shortcut key to display the Editor task pane and check spelling and grammar in the document or selected text is F7.
• It provides a fast way to open the Editor task pane for spell and grammar checking in MS-Word 365.
• The Editor task pane examines spelling, grammar, style, and more, offering suggestions for improvements.
• We can also customize settings in the Editor task pane to ignore specific errors or modify language preferences.

Additional Information

• F10
• Pressing F10 activates the "KeyTips" feature.
• KeyTips are keyboard shortcuts that allow you to navigate and access various commands and options in the Ribbon interface.
• Pressing F10 displays KeyTips on the Ribbon, enabling you to use the keyboard to access different tabs, commands, and options.
• F1
• Pressing F1 in Microsoft Word opens the Help pane.
• It provides access to the Word Help feature, where you can find assistance, tutorials, and information on using different features and functions within the application.
• We can search for specific topics or browse through the available help resources.
• F2
• Pressing F2 allows you to edit the selected text directly.
• It activates the editing mode and places the cursor at the location of the selected text, enabling you to make changes or modifications easily.
• This can be helpful for quickly editing or updating content within your document.

The correct answer is Option (1).

Key PointsWhen you reply, the recipient's email address will automatically appear in the To: field, so you won't need to worry about choosing the recipient.

Sometimes you'll receive emails where you're not the only recipient, and you'll need to decide whether you want to reply just to the person who sent the message or reply to all (the sender and all recipients). For example, if you're collaborating with a group of people via email, you'll probably want to use the Reply to all option so everyone gets the message. However, if you want to send a more private message to the sender, you'll need to select the Reply option so the message stays between the two of you.

Additional Information

To reply to an email message:

1. While viewing the message, click Reply at the bottom of the message. If the message was sent to multiple recipients, you will also have the option to Reply to all. You can also click the Reply arrow to respond to the message.

2. You may want to double-check the To: and Cc: fields to make sure you're sending your message to the correct people. If you are replying to all recipients, the additional recipients will appear in the Cc: field.

3. Type your message in the Body field, then click Send.

4. To see the text of the original email while you're replying, click the gray button in the lower-left corner of the window, right above the Send button.

The correct answer is Main document and data source.

Key Points

• A mail merge is a process to create personalized letters, emails, labels, or envelopes by combining a main document with a data source.
• The main document contains the text and graphics that are the same for each version of the merged document.
• The data source contains the information that varies for each version of the merged document, such as names and addresses.

Additional Information

• Address and template: This option is incorrect because while you do need addresses (data source), the term "template" is not the standard term used in mail merge. The correct term is "main document".
• Shared Document and Fixed Document: This option is incorrect because these terms do not relate to the mail merge process. "Shared Document" and "Fixed Document" are not standard terminology in the context of mail merge.
• From Document and To Document: This option is incorrect as it does not accurately describe the components involved in a mail merge. "From Document" and "To Document" are not used in mail merge terminology.

The correct answer is Registers.

Key Points

• Registers are considered to be special-purpose memory residing within the CPU.
• Registers
• ​It is the smallest and fastest memory in a computer.
• It is not a part of the main memory.
• It temporarily holds frequently used data, instructions, and memory addresses that are to be used by CPU.
• All data is required to pass through registers before it can be processed.

Important Points

• DRAM
• ​It stands for Dynamic Random Access Memory.
• It is a specific type of RAM.
• It makes use of a capacitor and stores every bit of data on the different 2 capacitor.
• It is the most efficient way to store data as the space required for the storage of data is less as compared to the static RAM.
• SRAM
• ​It is Static Random Access Memory.
• It holds data in a static form, that is, as long as the memory has power.
• Because of the continuous power, it doesn’t need to be refreshed to remember the data being stored.
• SDRAM
• ​Synchronous DRAM is a generic name for various kinds of dynamic random access memory that are synchronized with the clock speed that the microprocessor is optimized for.
• It can run at faster speeds than conventional DRAM.
• Being synchronized allows the memory to run at higher speeds than previous memory types.

The correct answer is 'Off the coast of Australia'.

Key Points

• This information is clearly stated in the first sentence of the passage, which says "The Great Barrier Reef is one of the most significant natural wonders in the world. Located off the coast of Australia, it is the largest coral reef system on the planet and stretches for over 2,300 kilometers."
• Therefore, the passage clearly indicates that the Great Barrier Reef is located off the coast of Australia, making option 2 the correct answer.

Correct Answer: Off the coast of Australia.

The correct answer is 'A coral reef system'.

Key Points

• The correct answer is 3) A coral reef system.
• This is stated in the first sentence of the passage, which says "The Great Barrier Reef is one of the most significant natural wonders in the world. Located off the coast of Australia, it is the largest coral reef system on the planet and stretches for over 2,300 kilometers."
• This sentence provides clear information that the Great Barrier Reef is a "coral reef system", meaning that it is a collection of living coral structures that form a large underwater ecosystem. Therefore, option 3) is the correct answer to this question.
• Thus, the correct answer is Option 3.

Correct Answer: A coral reef system.

The correct answer is 'Climate change'.

Key Points

• The passage explains in the second paragraph that the Great Barrier Reef is under threat due to climate change.
• Rising sea temperatures and ocean acidification caused by the burning of fossil fuels are causing significant damage to the reef. This is particularly concerning because coral reefs are sensitive to changes in temperature and acidity levels, which can lead to coral bleaching and ultimately the death of the coral.
• Option 1) Overfishing, is not the correct answer because it is not mentioned in the passage as a cause of damage to the Great Barrier Reef. Similarly, option 2) Oil spills, is not mentioned in the passage as a current cause of damage to the Great Barrier Reef.
• Option 4) Tourists, is not the correct answer because although tourism can have an impact on the reef, it is not identified as a primary cause of damage in the passage. Climate change, on the other hand, is specifically mentioned as a major threat to the Great Barrier Reef.
• Thus, the correct answer is Option 3.

Correct Answer: Climate change.

The correct answer is 'A phenomenon where corals expel the colorful algae that live in their tissues'.

Key Points

• The passage explains in the second paragraph that rising sea temperatures caused by climate change can lead to coral bleaching, which is the process of coral turning white due to the loss of algae that live within the coral. The algae provide the coral with food and give it its color, so the loss of these algae can lead to the coral becoming white or pale.
• Option 2) The process of coral dying, is not the correct answer because while coral bleaching can be a precursor to coral death, it is not the same thing as coral dying. Coral can survive coral bleaching events if the water temperature returns to normal levels before the coral dies.
• Option 3) The process of coral growing, is not the correct answer because coral bleaching is not a process that contributes to coral growth. Instead, it is a process that can harm or damage existing coral.
• Option 4) The process of coral reproducing, is not the correct answer because coral bleaching is not a process that is related to coral reproduction. Instead, it is a process that can harm or damage existing coral.
• Thus, the correct answer is Option 1.

Correct Answer: A phenomenon where corals expel the colorful algae that live in their tissues.

The correct answer is 'A plan to improve water quality, reduce carbon emissions, and protect vulnerable species'.

Key Points

• The passage explains in the first paragraph that the Great Barrier Reef is one of the most significant natural wonders in the world.
• It is a unique ecosystem that supports a diverse range of marine life, including many rare and endangered species.
• The reef also plays an important role in regulating the climate by absorbing carbon dioxide from the atmosphere and releasing oxygen.
• Let's have a look at the first and second sentences of the third paragraph:
• *Efforts to protect the Great Barrier Reef are ongoing. The Australian government has implemented measures such as the Reef 2050 Plan, **which aims to improve water quality, reduce carbon emissions, and protect vulnerable species.***​
• Thus, the correct answer is Option 2.

Correct Answer: A plan to improve water quality, reduce carbon emissions, and protect vulnerable species.