Question

Which option is an example of an experiment?

A. Recording the reaction time of participants in a study who were
asked to press a button as soon as they see a certain picture on a
screen
O
B. Testing the effect that eating organic food has on health by having
a group of people selected at random eat organic food for six
consecutive months and then comparing the results with a group
of people who didn't eat any organic foods during the same period
O
C. Asking students in a school how much time they spend exercising
O
D. Polling teenagers about their screen time in a day

Answer 1

B. Testing the effect that eating organic food has on health by having

a group of people selected at random eat organic food for six

consecutive months and then comparing the results with a group

of people who didn't eat any organic foods during the same period