Respuesta :
The part of the poem of "Vapor Trail Reflected in the Frog Pond" is about America's involvement in the war.
What is "Vapor Trail Reflected in the Frog Pond"?
Kinnell investigates the happenings in a natural setting and develops a serene mood with imagery of a pond and its inhabitants, only to subsequently destroy that mood with the mention of human act.
Thus, the correct option is D, America's involvement in the war.
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