Question

what is the simple sudject of the following sentence? during the night, the frigteneded child call for his mother and father.

Answer 1

I think it's  "child" or "frightened child" , because a simple subject is the main word or word group that tells whom or what the sentence is about.

Answer 2

A simple subject is the basic of the sentence, it is who the sentence is about. So the answer to your questions is Child because he or she is frightened