Read this excerpt from "not a dove, but no longer a hawk."

i remember distinctly the thrill of climbing aboard a u. s. army helicopter in the cool of the morning and taking off across the rice fields with a south vietnamese battalion for a day’s jousting with the vietcong guerillas. i was proud of the young american pilots sitting at the controls in the cockpit and i was grateful for the opportunity to witness this adventure and to report it. we are fighting now, i used to think, and some day we will triumph and this will be a better country.

based on this excerpt, it can be inferred that
the war provides the author with his first flying experience.
the author once felt pride and optimism about the war.
the us soldiers are trained in hand-to-hand combat.
the author has a begrudging respect for the vietcong.

in the secret life of walter mitty, the main character leads a dull life, or so he thinks.in all his daydreams he plays the role of some hero or a man who is unbelievably resourceful.whether a pilot, a surgeon   or even a criminal, he is better, so much better than all the rest of the characters in his delusions.he comes up with ideas nobody else could have conceived .when he comes back to reality, whatever he has to deal with seems silly, boring without any motivation to deliver.

in a sound of thunder a hunter,eckles, wants to use a time machine to go back in time to catch a tyrannosaurus rex. by then, 2055 elections were go held and a   new hitler was beaten by a far better candidate, keith.once he and other men have traveled,   he gets cold feet. he in   some way has known   this is not a good idea.he hears this sound , too strong for him to put up with . hopeless, he abandons the project making a mistake - another one as the first is to travel in time-that causes a butterfly effect when he comes back. in the end , changes reality for worse; the anti human anti christ deutscher,   is the president.

i would say a because the main idea is what the author is the point the author is trying to get across.

the answer would be c : illustrate that this type of suffering is unimaginable. just took the test