The story is told from the view point of the story's protagonist, Thomas.
So you're looking for 2 synonyms. B is the best answer, avert and prevent are synonyms of each other. The other choices are antonyms, or they're at least not synonyms.
The function of interjection is to express emotions or feelings. Usually it is a word or phrase.
Since 'The Wanderer' is about a man who is alone after a war, there is no one to talk to, his who family is gone, and he has nowhere to go, the correct answer is D, 'pain of homelessness'.