Reservations in this context could mean doubts, such as 'My mom had reservations about going out to shop."
This means that their mom was not sure if she wanted to go shopping or not because she has reasons not to.
Answer:
What exemplifies these men as heroes, as described by Hemingway, is:
D. They act casually and go about regular business, such as smoking, while actually in grave danger.
Explanation:
"A Farewell to Arms" is a novel by author Ernest Hemingway narrated from a first-person perspective. The narrator is Frederic Henry, an American lieutenant who is serving in Italy during the first World War.
This particular excerpt shows how the men are able to keep a cool head even though they know an attack is about to happen. That is what distinguishes heroes from those they protect. While regular people would feel nervous or scared, would run away to escape danger, heroes are able to remain calm. To show that, Hemingway describes how easily they go about regular business, such as smoking, as if danger is not lurking.
