Evan decides to test his prediction that seeds grow better in the dark. He has gathered seeds and put them on damp paper towels.
Which of the following would be the best way for Evan to test his prediction?
A.
put one paper towel with seeds in a sunny place and one in a dark closet
B.
put one paper towel with seeds in a cold, dark closet
C.
put one paper towel with seeds in a cold closet and another in a warm closet
D.
put one paper towel with seeds in a sunny window
B has one result but no comparison; i.e., better than what?
C tests temperature which isn't what Evan wants to test.
D has nothing about dark.
A is the only one that tests dark vs light to give a comparison as to which is best. (actually which is better---light or dark)