Answer:
In English grammar, this kind of imaginary sentence is called a conditional sentence. We use conditionals to talk about imaginary situations in the past, present and future. We use conditionals for situations that might happen in the future, or situations that might never happen.
They are both told for entertainment purposes, and, more importantly, to relate a moral- a life lesson.
Definitely A. B, C, and D have nothing to do with finding the main idea