Teens can become addicted to prescription, and really any, drugs. They can also do drugs to feel better and “fix” any illnesses they may have. Or they could just want to fit in and experiment and OTC drugs are the easiest to get ahold of.
Going to the doctor/counselor to talk and figure out what’s “wrong” with you are other ways to cope, really talking to anyone would be good. Some teens self harm in other ways besides drug abuse to cope.
I'd have to say d. the hand, because every human (for the most part, no offence intended to anyone) has a hand and is able to make good (or bad, rather) use of it. It's what a person always has access to at any given time or place, even if they don't have access to one of the other options.
If it’s a group project have different people do certain things if it’s just you then do one thing part of the project at a time