Which would be an adaptation in a rainforest, but not in a tundra? a. ability to store water for a long time b. fur that blends in with snow c. strong claws for killing prey d. a beak that can dig into thick trees

D, A beak that can dig into thick trees.

A, would be perfect for a tundra because difficulty in water supply, which it rains lots in the rain forest.
B, this would only be good in the tundra, which snow is at
C, this would be good for both, depending on which animal we are talking about.
//
If you need any more help on this problem, feel free to message me.