We hugged bamboo & leaned against a breeze off the river, slow-dragging with ghost from saigon to bangkok, with women left in doorways reaching in from america. we aimed at the dark-hearted songbirds.

The speaker mentions saigon to refer to the many lost lives in the vietnam war while the soldiers families waited anxiously.

Explanation:

The speaker mentions Saigon to refer to the many lost lives in the Vietnam War while the soldiers families waited anxiously. (APEX Class ;)

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.