Werner et al. (1983) conducted an experiment with bluegill sunfish of three different sizes: small, medium, and large. The bluegills were placed in experimental ponds with three food types: benthos (best food type), plankton, and vegetation (worst food type). Half of each pond had predators — largemouth bass — and the other half was free from predators. In the half without predators, all three sizes of bluegills fed on the benthos and used the pond habitat equally. In the half with predators: • Large bluegills stayed in the open water and did not change their diet. • Medium bluegills stayed in the open water and shifted to eating plankton. • Small bluegills shifted to hiding in and feeding on the vegetation. What conclusion(s) can you reasonably draw based on these results? [Select all that apply.]