A group of plant eating animals moves far away from their original population. In the new environment, the only edible vegetation grows at the top of tall trees. In order to survive, the animals need a new adaptation. Which of the following variations would be the most useful new adaptation to members of the group? A) Wider, flatter teeth that can chew and grind plant material.

B) A longer neck to reach the vegetation that is high up in the trees.

C) A better digestive system for breaking down plant material.

D) Larger ears and eyes located on sides of head to detect predators.