A researcher designed an experiment to determine if consumption of caffeine results in increased level of motor activity.In this study, the independent variable is the

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated by the researcher in order to observe its effects on the dependent variable. In this case, the independent variable is the consumption of caffeine, and the researcher is observing its effect on motor activity. Therefore, the correct choice is A, caffeine. The other choices are not relevant to the independent variable in this study.

A Researcher Designed an Experiment to Determine If Consumption of Caffeine