In a study of how vitamin e may reduce the risk of cardiovascular disease, one group was given a placebo, and the other group was given vitamin e supplements. the group that received the placebo was the group.
a. control
b. experimental
c. double-blind
d. hypothetical

The answer is A.

The group thed that received placebo was called the control group

In treatment, a control group is designed to assess treatment effect. So the researchers could see whether the actual treatment is giving an effect or not. It operate like some sort of benchmark

In order to help the student expand his/her knowledge I will help answer the question. This in hope that the student will get a piece of knowledge that will help him/her through his/her homework or future tests.

In a study of how vitamin E may reduce the risk of cardiovascular disease, one group was given a placebo, and the other group was given vitamin E supplements. The group that received the placebo was the control group.

The answer is A. control

I hope it helps, Regards.      

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