Finch a feeds on nuts and finch b feeds on worms. what is the correct feeding adaptation for the two finches? a: finch a and finch b have thin, sharp beaks. b: finch a and finch b have large, sturdy beaks. c: finch a has a large, sturdy beak; and finch b has a thin, sharp beak. d: finch a has thin, sharp beak; and finch b has large, sturdy beak.