Answer:
A. making eye contact
Step-by-step explanation:
The other options are very illogical. Looking at your notes the whole time, will give off the impression that you're not interested in you're audience, or that you seem afraid. Lack of confidence may unintrest you audience. Keeping your hands still may exclude yourself from interacting with the audience. Some hand motions help the crowd understand the point that you're trying to get across. And giving a quiz...well, it might just appear that you don't know anything about your topic, so you've resorted to asking the crowd for help!