Answer:
A.) Mia's best friend offers her a cigarette.
Step-by-step explanation:
Everything else is positive peer pressure, other peers telling them to do what is best for their well-being. But A, when it says Mia's best friend offers her a cigarette, that is a negative peer pressure, her best friend is giving Mia the pressure to smoke (a negative influence) even when someone offers something, they aren't pressuring the other person, in this situation it is different because she is your best friend which puts more pressure internally and externally.
Also, doing it on EDG right now!
Good luck :P