PLEASE HELP WILL MARK BRAINLIEST An ASL user can show that a question is being asked by

maintaining a neutral expression until the last word
making the sign for question mark at the end of the question
signing the entire question more slowly than usual
using facial expressions and emphasizing question words

An ASL user can show that a question is being asked by using facial expressions and emphasizing question words.

Explanation:

The person that is being signed to will not understand what I sign, if you don't use facial expressions. Facial expressions are one of the most important mandatory things you should do wile you are signing. The person you are signing to cannot hear, so you need to emphasize and show that you are asking a question. Tried my best, hope this helps you.