Answer:
The main idea is the point of the paragraph. It is the most important thought about the topic. The main idea is usually a sentence, and it is usually the first sentence. The writer then uses the rest of the paragraph to support the main idea.
They allow readers to multitask
A cheese burger is stacked like an essay or writing
Top bun is the intro
The meat and toppings are your body paragraph full with reasons and evidence supporting your topic
The bottom bun is your conclusion