The casual behavior of the characters during a difficult time demonstrates hemingway’s belief that a hero should

The answer to your question is it Possess a certain amount of wit. Heroes should be strong and bold, but not necessarily whimsical. Hope it helped 

Do you have more info about it ? i doubt this is the answer because i don't have all the information but if trouble was brewing in a clinic maybe it was an argument as to which clinic was better or smth of that nature