Answer:
You should include one when there are two sentences being put together into one.
Explanation:
For example, you would put a comma here:
I like ice cream, and I like cookies.
There are two sentences here, therefore, the comma is necessary to separate them.
However, a comma is not necessary here:
I like ice cream and cookies.
This is one sentence, so the comma is not needed here.
Answer:
You should include one when there are two sentences being put together into one.
Explanation:
pls give me brainiest