Michael is performing an indoor experiment with plants to determine how they react to light. Which of the following is a testable hypothesis that is relevant to his experiment?
A.
The overall health of a plant depends on whether or not it is properly fertilized.
B.
Placing plants in clay pots can affect the number of times the plant needs to be watered each week.
C.
The angle at which indoor plants grow is related to the location of natural light sources such as windows.
D.
The final height of a plant is determined by the average outdoor temperature of an area.