in studying humans, whales, and horses, which of the following set of similarities would be evidence for the most recent common ancestor
A. they all have hair
B. they all have internal skeletons
C. they are all mammals
D. they all have similar bones in their limbs
D. they all have similar bones in their limbs
This set of similarities would be evidence for the most recent common ancestor because the presence of similar limb bones suggests a shared evolutionary history and a common ancestor. The other options (having hair, having internal skeletons, being mammals) are more generalized characteristics that are shared by many different species and may not necessarily indicate a recent common ancestor.