What was an Early Selective Advantage of a Coelom in Animals

Question

What was an early selective advantage of a coelom in animals? A coelom ________.
A)contributed to a hydrostatic skeleton, allowing greater range of motion
B)was a more efficient digestive system
C)allowed cephalization and the formation of a cerebral ganglion
D)allowed asexual and sexual reproduction

Accepted Answer

A coelom contributed to a hydrostatic skeleton, which allows for greater range of motion and mobility. This would have been an early selective advantage for animals with a coelom, as it would have allowed them to move and explore their environment more effectively. A coelom also allows for better protection of internal organs and more efficient circulation of nutrients and waste, but these advantages may have come later in the evolution of coelomate animals.