Directions: Read the given passage carefully to answer the following questions. Each question will have five alternatives as its answer. Choose the correct option as your answer.
Snowy, a sleek and vigilant German Shepherd, was not just any ordinary dog; he was trained to be an exceptional military sentinel. His journey to become an indispensable part of the army began when he was just a pup. Snowy showed remarkable intelligence and agility, which didn't go unnoticed by the army's canine training unit. Recognizing his potential, the trainers decided to enlist Snowy in their rigorous training program, designed specifically for military operations. The training was no small feat. It involved months of intense physical and psychological exercises. Snowy was trained to detect explosives, track human scent across challenging terrains, and even engage in controlled attacks if necessary. His role was not limited to just detecting danger; he was also trained to be a sentinel, guarding military camps and alerting soldiers to any unusual activity. Snowy's discipline and loyalty quickly made him a favorite among the troops. Snowy's first major operation came during a mission to clear a heavily mined area near the border. The operation's success heavily depended on Snowy's abilities. With his keen sense of smell and rigorous training, Snowy successfully identified several hidden explosives, preventing what could have been a catastrophic event for the soldiers. His achievement in this operation earned him a commendation from the commanding officer, and Snowy became a symbol of bravery and reliability in the unit. In another instance, Snowy demonstrated his value during a high-stakes hostage rescue mission. Acting as a sentinel, he silently led the team through enemy territory, using his advanced tracking skills to locate the hostages. His ability to remain calm under pressure and his unwavering focus were instrumental in the operation's success, ensuring the safe return of all the captives without attracting enemy attention. Snowy's contributions went beyond his missions. His presence boosted the morale of the soldiers, and his achievements underscored the critical role that military dogs play in operations. For Snowy, being a military dog was not just about following commands; it was about protecting his fellow soldiers and ________ the safety of the unit. As a testament to his dedication and skill, Snowy was often referred to as the ultimate military sentinel, a title he undoubtedly earned through his unwavering service and exceptional capabilities. The story of Snowy, the military dog, serves as a powerful reminder of the important roles that these trained canines play in ensuring the success of military operations and the safety of soldiers. Snowy's bravery and expertise made him a true hero in the eyes of the army, a testament to the incredible bond between humans and their canine companions.