Adding Instructor Photos and Clearing Test Answers

I have two quick questions.

How do I get the instructor's photo added to the course instructor's section? I have uploaded photos of the instructors as users and they show up in that location, but not in the course listing.

I have started a test course and have a multiple question. When I go to preview, the question is already answered. How do I clear it, so I can test again?

TIA