What can be said about the weights of the watermelon and the pumpkin from the above two figures?

Answer

Looking at the figures, we see that the watermelon is balanced with one weight on the left side and the pumpkin is balanced with different weights on the right side. This means that the total weight on each side is equal when the scales are balanced. However, since the sides of the scales appear different with varying weights, we cannot determine a direct comparison between the weights of the watermelon and pumpkin. They may each have different weights with the balance being solely due to the weights on either side. Thus, there isn't enough information to directly indicate whether one is heavier, lighter, or equal in weight to the other. Therefore, the correct answer is D: We cannot say anything for sure because the two weights are different.