The student lied about who signed the paper and forged his parent's name. Not a compound sentence
Compound Sentence

compound sentence

Explanation:

the use of the word and is to join two ideas into  a compound sentence

b.)the road of trials

explanation:

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.