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Dr Smith Is Developing a New Drug to Treat Headaches

Question 31

Multiple Choice

Dr. Smith is developing a new drug to treat headaches. To test this drug, she develops a study in which one group gets the new drug, and the other gets a placebo, or a fake pill. Dr. Smith measures whether or not headaches improve by giving each participant a survey each day. The drug is the _____.


A) independent variable
B) dependent variable

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