A Pharmaceutical Company Wishes to Study a Possible New Headache

Multiple Choice

A pharmaceutical company wishes to study a possible new headache medicine. They are doing human trials with 1000 volunteers who experience frequent headaches. The researchers will need to ____________.

A) have 10 volunteers in the control group
B) put all women in the control group and all men in the experimental group
C) control for the type of headache-stress, migraine, or other causes
D) divide the groups by level of health
E) give all 1000 volunteers the same amount of the new medication