Suppose a researcher wants to know whether a high protein diet causes children to learn better in school. Half of the children in the study eat a high protein diet while the other half eats their normal diet. The control group consists of the

Question

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The control group consists of the children who eat their normal diet, as they serve as a comparison group to the experimental group (the children who eat a high protein diet). This helps to isolate the effect of the high protein diet on learning, as any differences in learning between the two groups can be attributed to the diet variable. Option A (male children) and B (older children) do not relate directly to the research question and are not relevant for determining the control group. Option D (children who eat the high protein diet) cannot be the control group as they are the experimental group being studied.

Suppose a Researcher Wants to Know Whether a High Protein