Answer:
"If you aren't sure if a link is legitimate, click it to see where it goes."
Explanation:
If you click on a unknown URL the host of the website can steal a lot of information from you computer. Like your geolocation
Well, I think that maybe the answer is B or C. She shouldn't only look at her presentation while she is presenting it, that doesn't look professional, and you want to look at the people you are talking to.