Answer: d. motor
Explanation: Efferent neurons are motor neurons. They are called efferent neurons because they transport nerve impulses out of the central nervous system (CNS) to effectors such as muscles or glands.
The answer is A. Class, because the divisions get smaller and smaller as they go down. Class is before Order so the division would be bigger.
To take precuation and inform properly about the disease and run the adequate tests to be sure of the risk that the family member runs. Hope this is useful
