Heres some gachas ive made!!

Cigarette manufacturers purposefully add to cigarettes in order to give them a particular flavor. a. cocaine b. carcinogens c. cigarette ashes d. a and b

In a person dependent on a drug, occurs when the drug leaves his or her system quickly or for a prolonged period of time. a. addiction b. withdrawal c. independence d. relapse

The double-blind procedure is most for a. random assignment b. the placebo effect c. operational definitions replication d. standard deviations