kikitheguineapiggie kikitheguineapiggie

02-09-2020
Biology

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From the last question! which of the following is the independent Variable In experiment A: The presence of the headache B: the experimental drug C: The placebo D: the medical researcher.

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heatherleaop heatherleaop

02-09-2020

Answer:

B

Explanation:

The experimental drug has a direct effect on the dependent variable which is the presence of the headache.

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