50 ! plz ! which is the correct definition of drug abuse? a. use of drugs at a nightclub or rave. b. the use of a drug for non-medical purposes. c. the use of a drug under doctor's supervision. d. substances that are against the law for people of any age to manufacture, possess, buy, or sell.

Karen is waiting by the lockers before school for her friend richard. they had agreed to look over the history review sheet together to be ready for the test later that day. richard shows up late with uncombed hair and wrinkled clothes. karen: "you're five minutes late and you look like a wreck! " richard: (slams his locker) "you know, i don't have time for this." karen: "fine! figure out the test on your own! "