Respuesta :
D. The hip bone may have played an important role in the whales' ancestors' locomotion.
The correct answer is D. The hip bone may have played an important role in the whales' ancestors locomotion.
Explanation:
Vestigial structures such as the vestigial hip bone in whales refer to structures or features that do not have a function or purpose and therefore are classified as vestigial. In most cases, these structures had an important function in the past but due to evolution and changes in the species, they stop being functional. This means even though the vestigial hip bone of whales does not represent a function nowadays it may have played an important role or function for the ancestors of this species (option D).