An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?

Question

A
type of plant, amount of music, and sunlight

B
water, apple juice, and milk

C
plant growth

D
There are no controlled variables in this experiment

Answer 1

A
type of plant, amount of music, and sunlight