Imagine you are collaborating with researchers studying the effect of marijuana on driving. participants are assigned by chance to either a) receive a pill that contains thc, the active ingredient in marijuana, or b) a harmless placebo pill. neither the researchers nor the participants know who is getting which pill. after taking the pill, participants are asked to drive a computerized driving simulator. the number of collisions participants have is measured. this study uses a(n) design.

Experimental

Explanation:

The given example is an experimental design research study because participants are assigned to two groups, one will receive a THC pill and the other will receive a placebo pill. Hence, the researchers are experimenting that what kind of affect occurs and is then recorded. When such a setting is created in a research then it is an experimental research design as the researchers are clearly interfering and are in contact with the participants of the study.

i do believe   by (keeping an organized record of all sources he or she referenced)good luck.

explanation: