What is the simple subject of the following sentence during the night the frightened child cold for his mother and father

First we have to understand that the simple subject is who or what the sentence is talking about. It is the term used for the single word which is the subject of a verb. In this case is the child. The correct answer is choice B).

I hope it helps, Regards.

the answer to "what does the narrator realize by the end of the story" is b.