Question 8 - Science Practice Test for the GED Test

The individual who does not apply skin cream during this experiment would be what?

A scientist is trying to determine the effects of certain creams on skin rashes. He has a sample of four different individuals. Three individuals each take one of three different creams (Creams A, B, and C) and one does nothing. After three days, Cream A has reduced the rash by 50%, Cream B has reduced the rash by 70%, Cream C has reduced the rash by 30%, and the individual who did nothing had the rash reduced by 15%.

the independent variable
none of these
the control
the dependent variable

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