Depending on the audience, the formality, ideas presented, and vocabulary can change. For example, if you were presenting to children, you wouldn't use complex words.
Answer:
use this site to help u with you work
The answer is a bro hope i helped
Answer:
C.
None of the other examples fit the descriptions of an aside
Answer:
Subtopic
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 <em>under</em> the main topic
Thus, the answer is subtopic.
Hope this helps!