Deanna wanted to test the idea that eating carrots improves a person's ability to see at night. She
asked ten people to eat one carrot a day for a month, and asked ten other people to eat no carrots
for a month. She then tested their night vision.
Who is the experimental group in this experiment?
a. Deanna.
b. There was no experimental group.
C. The ten people who ate carrots.
d. The ten people who did not eat carrots.
