Answer: Option C) Vestigial
Step-by-step explanation:
A vestigial parts are the body parts that are shared with a common ancestor specie and have been modified to work in different ways because of changes in the mode of life.
Examples of vestigial parts in humans include:
- the appendix, which functions as caecum in herbivores
- mammary glands, which is well developed in women but not so developed in men