What will happen when percy brings the lighting bolt to zeus?

Zeus distrusts his brother Poseidon and for that reason believes that he put his son Percy to steal his master bolt. Percy returns the master bolt to Zeus and tells him all the suspicions he has about Kronos, but Zeus does not want to talk about it and he concludes the subject. After this, Poseidon reduces himself to normal size and reveals to Percy that his mother still lives so he returns to his home in Queens.

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.