I believe that the line from "Helen Grey" which suggests that Helen has an unrealistic sense of herself is the last option - Stoop from your cold height, Helen Grey.
She is giving advice to herself that she should change because nobody will be there for her unless she does that.
The answer is c. An imperative sentence is a sentence that gives command.
The answer would be B ^^
But you do know that you shouldn't take a photo of a test and post it right? It could get you in trouble at school ;-;
But I hope that helped ^^
Brainliest would be great if possible! ^^