Answer:
The big idea that the story is about is called the central message. Sometimes a story is about a lesson, or something the author wants us to learn.
Explanation:
It is defining.
Defining relative clause does not have a comma, while a non-defining relative clause has.
For example, if the sentence is:
The children, who hate chocolates, are uncommon.
- since there is comma in this sentence, it is non-defining.
- while if there is no comma like the question in the picture, it is defining.
What else did she tell u???