Galapagos finches had a different type of beak depending on its environment. They adapt themselves on the available food sources in their environment. Beak shape of finches varies among its species. They were able to evolve based on the different food sources in their habitat. Long, pointed beaks can snatch insects. Broad and blunt beaks can crack seeds and nuts.
Answer - D. Their beaks were adapted to the finches’ particular environment.