Multi-choice problem: Continue writing the next sentence in this paragraph:

How to get to know a girl on facebook
Have an interaction with the girl in person before you take it to facebook.
This doesn't need to be a long conversation or a date or anything, but make sure she knows who you are. Make eye contact and smile, ask her about the homework, get a friend to introduce you.

OPTIONS:
[-] If she knows you already know her, wait for a moment to wait for her to guess. You can also make it a game to meet her.
[-] Even just a small interaction will work to break the ice between you, so that when you do approach her on facebook, it won't seem so random and she'll be much more likely to respond positively. Send the girl a friend request on facebook.
[-] If she flirts back she's somewhere between the two and doesn't try to dislike you or judge you. Go the extra mile and ask her for your number at least once.
[-] You should start off in a casual way with the girl, but it should be more informal than a date. It shouldn't give off the impression that you are friends, just/her friend.
Even just a small interaction will work to break the ice between you, so that when you do approach her on facebook, it won't seem so random and she'll be much more likely to respond positively. Send the girl a friend request on facebook.