Answer:
A. plant 3; plant 3
Explanation:
Plant 3 was the tallest at the beginning. We know this because it is the plant with the highest recorded height at time = 0.
Plant 1 grew 3.5 inches over 6 weeks.
Plant 2 grew ~ 2.25 inches over 6 weeks.
Plant 3 grew 4 inches over 6 weeks.
> This means that plant 3 grew the most, or had the greatest rate of change, over the 6 weeks.