One of the themes in the drama My children My Africa is the generation clash​

Apartheid, Race, and Human Connection

In My Children! My Africa!, Athol Fugard shows how the apartheid regime reserved wealth and power for white people by dividing South African society along a racial line and ruthlessly exploiting the Black majority. But the racial divide also serves another purpose: it geographically, socially, and politically separates groups of people from one another, in order to try and prevent white people from recognizing non-white people’s humanity and fighting for social equality.

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.

adding more details about the struggle rainsford experiences as he swims to the shore