The meaning of this phrase is the hundreds people across campus who are unknown there was a guy who (I guess) stood out from the crowd.
No, because it is just one word alone. However, if it is stated in a sentence in a passage, then it may need a hyphen.
Hope this helps!!:)
The correct answer should be<span> A. remember your topic and stay focused.
If you're not focused and you don't keep the topic in your mind you might wander off and get some info that is not relevant for your topic. </span>
I think it means that she couldn't speak very well because of (whatever happend) and that she could hardly speak,
