Question

For several centuries, people believed that a plant grew because its roots consumed soil. To test this hypothesis, which of the following tests would give you the BEST idea?

A)Cover a plant for two weeks with a black cloth.

B)Transplant the plant in a tub of water.

C) Weigh both the plant and soil at the beginning and end of the growing season.

D) Cut away the soil to expose a root and observe the process.