I need help with this

Um, this is a personal response question to another question. not the kind of question to ask on

Ibelieve the answer is: c

A. they give the reader hope. if the whole book was dark & unhopeful it’d be a little less interesting, little moments make it more interesting to read because then you want to know what happens. if it’s all dark there’s no point in reading if you already know the outcome of it.