Five groups of geranium plants will be potted in the same type of soil in the same size pot. They will receive the same amount of water daily, but receive different amounts of sunlight. They plan to measure the height of each plant after two weeks of growth. What is the best reason for using the same soil, pots, and amount of water for all of the plants? (A. Using different soil, pot sizes, and water levels could affect the plant's growth. B. It was less expensive to purchase five of one type of pot than five different pots. - C. Using the same amount of water for each plant helps conserve water resources. D. It is easier to purchase one large batch of soil instead of several smaller batches.
