Vestigial structures, such as hip bones in whales and appendixes in humans, are those that have little or not function for the organism. What is the most likely reason for this loss of function over time? A) The organism is undergoing speciation.
B) The organism is experiencing genetic drift.
C) The structure was over utilized by the organism.
D) The structure was not highly beneficial to the organism.
(I think it's D... but i have a few extra points so i thought i'd ask)