Which of the following images from “life at war” best supports the speaker’s opinion about war? “. . rolling/in the brain like pebbles.” “whose eyes/are flowers that perceive the stars” “. . the mucous membrane of our dreams/coated with it” “. .‘my heart. . /could i say of it, it overflows/with bitterness

Life at War is a poetry book that talks about the Vietnam war, but it also reflects on how wars and conflicts have been internalized as something natural in our daily lives and how much they influence in our mindset and worldview.  The best image that supports this idea is expressed in the verse “. . . the mucous membrane of our dreams/coated with it”, because it refers to the wide control War ideas have on out thoughts and dreams.

“. . . the mucous membrane of our dreams/coated with it.”

The speaker's opinion in "Life at War" is that war is present in everything we do, and that it has an enormous influence on how we understand society and the world. The sentence that best supports this view is the third one. This sentence explains that even our dreams are "coated" (covered, influenced by) the concept of war.

3 is the answer, I think.