When are numbered lists generally used

answer: A. when listing items that are not sequential B. when listing items that are of equal importance C. when listing items that have an order of priority

C. When listing items that have an order of priority.

Explanation:

There are a lot of ways to list items such as alphabets and Roman numerals.

And the all have their respective reasons.

When numbering in order of priority, it is more appropriate to use numbers instead of alphabets and Roman numerals.