All of your answers are correct.
Answer:
Main idea
Explanation:
The main idea is the central point which is buttressed by series of details or points that support the purpose of the main idea.
Answer:
Fahrenheit 451 demonstrates the dangers of a society focused only on the immediate gratification of the present. This society has all but erased history. Its members derive meaningless pleasure from watching their "families" on futuristic televisions and don't engage in any meaningful conversations.