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 change from one group of chamomile to the next? a. the location of the plants b. the height of the plants c. the type of plants d. the amount of water she gives the plants