As the modern horse evolved from its ancestors due to changes in feeding habits, substantial changes occurred in the shape of its teeth. what kind of change in feeding habit is reflected by these modifications? . a) the ancestors grazed on soft forest leaves, and modern horses graze on hard grasses. b)the ancestors grazed on hard grasses, and modern horses graze on soft forest leaves. c)the ancestors grazed on leaves of tall trees, and modern horses graze on hard grasses.

Option B, The ancestors grazed on hard grasses, and modern horses graze on soft forest leaves.

Explanation:

Before the rise of Miohippus, the horses used to feed on plant and trees leaves. But with the changing climatic conditions, the forests converted into the grassland and then some where around 28 million years ago, Miohippus arose which were grass eating horses. By this period the teeth became harder and the focus was on incisors and molars  . After Miohippus, the horse species came with softer teeths as they started feeding on soft leaves of plant and trees.

Hence, it can be said that The ancestors grazed on hard grasses, and modern horses graze on soft forest leaves.

Option B is correct

a. by using fur or clothes to trap heat energy near the body

c. live where it’s cold and icy