Sarah wants to know where in her garden chamomile would grow the best. She thinks chamomile will grow best in the corner of the garden that gets the most sunlight. To test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. Which of the following variables should Sarah keep the same between all the chamomile plants?
A.
the type of plants
B.
the height of the plants
C.
the location of the plants
D.
all of these