Question

the mythbusters team conducted an experiment about pea plants and sound. some pea plants had sound playing, and some didn’t. at the end of the experiment, they measured the growth of the plants. which is the independent variable in this example?
pea plant growth
the amount of water given to the pea plants
whether or not sound was playing

Explanation:

An independent variable is what is changed or controlled in a scientific experiment to test the effects on the dependent variable. Here, the experiment is testing the effect of sound on pea - plant growth. The factor that the experimenters manipulate is whether or not sound is playing.

Answer:

C. whether or not sound was playing