Question

which of these might be part of an animals nervous system? select all that apply.
nerves
a brain
blood vessels

Explanation:

To determine parts of an animal’s nervous system, recall: The nervous system includes the brain (central component) and nerves (transmit signals). Blood vessels belong to the circulatory system, not the nervous system. So "nerves" and "a brain" are correct; "blood vessels" is incorrect.

Answer:

nerves, a brain