Answer:
1. Topic.
2. Main idea.
3. All three? I don't understand what you were trying to say in the question. If you meant what to do to look for the main idea of a text, all of the above should be correct.
Explanation:
Answer:where’s the bold
wait so you want us to write an essay for you?
May include a burned out city or high tech factory.
Bro Where the graph at??
It'd be "B," friend :)