Which of the traits below are likely vestigial? the small thumb on a human hand tiny eyes on an insect living in a lightless cave small tentacles on a burrowing amphibian that are used for sensing food. the giant eyes of a fish living in a low-light environmen?

Vestigial organs or parts of the body are those that has lost its function in the course of evolution. These organs or parts have degenerated or atrophied. It can appear as remaining small or imperfectly developed. An example is the tiny eyes on an insect living in a lightless cave.