3. I have promised my parents that I won't smoke, but my friend convinced me that what they don't know won't hurt them.*
O put down
O rejection
O reasoning/unspoken peer pressure

reasoning/unspoken peer pressure

Explanation:

your friend convinced you with the appealing nature of ignorance, therefore reasoning with you. Also, since the person is your friend, this can be seen as peer pressure (your friend is the "peer" that's pressuring you into smoking).