How many Common App essay questions are you supposed to answer?

I feel like this is such a dumb question and the answer is obvious, but I’ve googled this question a ton with no clear answer. If I were to be applying to really competitive schools, how many Common App essay questions am I supposed to answer? Is it only possible to answer one, or can you answer more. If more than one, how many is recommended? Thanks.

One. No school wants more, or would even accept more. Some schools may also ask supplemental essay questions that you will see when you select that school in the Common App.

Ok great, thank you for the clear and quick answer! That makes it at least sound a lot less daunting.