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Which option best describes examples of vestigial structures?
A. A human arm and a cat's foreleg, which contain similar bones
O B. A shark's tail fin and a horse's hoof, both containing cartilage
O C. Pelvic spurs in snakes and wisdom teeth in humans
OD. A bat's wing and a butterfly's wing, both used to fly

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GinnyAnswer
The best description of vestigial structures is: C. Pelvic spurs in snakes and wisdom teeth in humans Vestigial structures are remnants of organs or structures that had a function in the organism's ancestors but are reduced in size or have no apparent function in the current species. Pelvic spurs in snakes are examples of vestigial structures because they are remnants of hind limbs from their evolutionary past when snakes had legs. Similarly, wisdom teeth in humans are considered vestigial because they were useful for our ancestors who had larger jaws, but in modern humans, they often do not have enough space to erupt properly and serve little purpose. These structures provide evidence of evolution and how organisms have changed over time.

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