Gregory is doing his experiment for the science fair. The above table shows the data he collected. Based on the
table, what is the best description of what Gregory wanted to know?
Select one:
O a. Which brand of fertilizer (A, B, or C) works the best?
O b. Which amount of fertilizer will show the most growth?
O c. What level of fertilizer is the most that can be given before growth declines?
O d. Which brand and amount of fertilizer will work best?