Question

A less important subject under the main topic is called the _____.

subtopic
outline
main idea

Answer 1

Subtopic

Step-by-step explanation:

Look at the answer choices and see which ones can be eliminated.

Outline: this is basically a laid-out structure for how someone wants to write an essay, create a project, etc; it doesn't match the description, so it's wrong.

Main Idea: wrong because we want the less important subject under the main topic

Thus, the answer is subtopic.

Hope this helps!