Finches developed special beaks that help them eat either insects or seeds, depending on which is more plentiful in their area. Why is this a good example of an adaptive function?
Select one:
a.There is a lot of variation in beak type.
b.Different beak types make finches less likely to be eaten by a predator.
c.Finches learned to communicate about food options.
d.Different beak types help the finches survive in their environment.