Question

what are vestigial organs or structures?

organs or parts of an organism that serve a critical function in survival.

organs or parts of an organism that have newly evolved.

organs or parts of an organism that have lost or changed their function over time.

Explanation:

Vestigial organs or structures are remnants of evolutionary history. They were functional in ancestors but have lost or changed their function over time due to evolutionary changes like environmental shifts or new survival strategies. For example, the human appendix may have had a digestive function in primate ancestors but its function has diminished in modern humans.

Answer:

Organs or parts of an organism that have lost or changed their function over time.