College

Jasmine and her partner want to test if there is a relationship between the exposure of her solar panel to sunlight and the speed of her solar car. She uses a piece of paper to cover different amounts of the solar panel. The chart below shows the data she collected.

What is the independent or manipulated variable for this experiment?

A. The average of the trials
B. The speed in centimeters per second
C. The size of the solar panel
D. The amount of solar panel covered​