The answer would be D) All of the above because when it comes to peer pressure, it can make u sad and discouraged to do things u usually do, could lead to bad conduct such as: smoking, stealing or even being drunk, and this can lead to questionable friendships because when a friend makes u do something u don't want to do, u may think to yourself, is this person really my friend and does he/she consider me equal to them and not just a pawn.
Hope this helps.