Which best describes why “ambush” contains a frame story?
a. the narrator situates a flashback of his experience in vietnam between related events that take place after the war.
b. the narrator describes events that take place in two different countries: the united states and vietnam.
c. the narrator situates a flashback to his boyhood between related events that take place in the present, when he is an old man.
d. the narrator describes events that take place in two different locations: a living room and a jungle.

A. The narrator situates a flashback of his experience in Vietnam between related events that take place after the war.

Explanation:

In the story "Ambush," the author begins by telling us a story that takes place in the United States. The story takes place in the present. However, as the author tells us about it, the story prompts him to reflect on his past in the form of a flashback. The flashback relates his experience in Vietnam, which becomes a secondary, but well-developed story. This can be considered a frame story because it contains a story within a story.

i hope this !

because he wants to address citizens immediate concerns