This represents the defense mechanism of regression because the woman in the cartoon is resorting back to her previous, college-day habits in which she used to drink large amounts of coffee when she got nervous (just how she's feeling now).
This depicts regression, as the woman
Regression
I'm so nervous about my big presentation tomorrow, that I've drank 4 coffees in an hour-just like my college days!!
Reaction Formation
This represents reaction formation because even though the girl states she's happy she's single, she appears to be sarcastic and is actually feeling bad about her recent breakup.
I just broke up with my boyfriend, but I am "totally happy". Let's party, guys!!!
I'm really upset and stressed about school right now, but I will do some mediation and yoga to calm down.
This is an example of sublimation because the girl is converting her stress and anxiety regarding school into a more mindful practice such as meditation, which shows that she's converting her unacceptable emotions to acceptable actions.