Question

PLEASE HELP!!
Erin conducts an experiment to determine whether or not the amount of sunlight a plant receives affects its fruit output. She uses one plant in her experiment. How can Erin improve her experiment design?

A. She can also test whether or not the amount of water the plant receives affects its fruit output

B. She can use more of the same kind of plant

C. She can move her plant to several different windows throughout the day