Question

max is testing how caffeine affects test scores. what will his control group be in this experiment? a group where test scores are not measured a group that does not receive caffeine, to act as a comparison a group that receives caffeine to act as a comparison a group where test scores are measured

Explanation:

In an experiment, a control group is untreated to compare with the experimental group. Here, it's the group not receiving caffeine.

Answer:

B. A group that does NOT receive caffeine, to act as a comparison