“Plant growth is dependent on the amount of fertilizer applied.” That was the hypothesis Mel and Bill decided on for their science project. They planted identical seeds in the same potting mix, in similar pots. Each pot received the same amount of water and all the pots were placed in the same location in the greenhouse. Mel and Bill’s data was summarized after three weeks.
What would be the MOST appropriate conclusion for this experiment?

A. High applications of fertilizer will kill the plants.
B. Fertilizer application had no real effect on plant growth.
C. Optimal plant growth is attained by applying fertilizer.
D. An application of 3 grams of fertilizer produced the largest plant in three weeks.