Answer: C. Boots
Step-by-step explanation:
In the book, "The Things They Carried" by Tim O’Brien, we follow a U.S. Army company as they fight the Vietnam war. Tim O'Brien is the main protagonist in the story and tells the story for the most part as he tries to navigate his feelings about the horrors of war.
There are certain things that can trigger his memory of the war and bring him unpleasant thoughts. One of those things are boots as these remind him of the footwear that soldiers had to wear.