How many times have you heard a speaker in a Q & A session NOT repeat the question from the audience?  Too many times for me.  The speaker normally has a microphone; the audience almost never does.  Do yourself (as a presenter) and most importantly your audience a favor.  Repeat questions from your audience so all can hear.

This will confirm the question, help the rest of the group, and give you time to pause and think of the right response.