Zack Believes That Drinking Milk Improves Memory

Multiple Choice

Zack believes that drinking milk improves memory.He conducts an experiment in which he randomly chooses a group of participants and randomly divides them into two groups.Group A drinks milk before trying to remember a list of nonsense syllables.Group B drinks nothing before trying to remember a list of nonsense syllables.The experimental group in this experiment is ____.

A) the number of nonsense syllables remembered
B) Group A
C) the level of thirst before drinking the milk
D) Group B