The correct answer is D. He uses deductive reasoning because he introduces a conclusion and proves it with evidence.
Deductive reasoning starts out with a general statement and examines what makes the statement true. Machiavelli began by stating "it is much safer to be feared than loved..." followed by examples of how Hannibal used fear to become a respected leader.
Think of your own experiences, even things as simple as going to the zoo and finding out you really like monkeys. Describe what you were feeling during that moment and what caused you to understand that. Describe your surroundings too