Question

preganglionic cholinergic axons are
only in the sympathetic nervous system.
in both the parasympathetic and sympathetic nervous systems.
in neither the parasympathetic or sympathetic nervous systems.
only in the parasympathetic nervous system.

Explanation:

Preganglionic neurons in both the parasympathetic and sympathetic nervous systems release acetylcholine (are cholinergic).

Answer:

in both the parasympathetic and sympathetic nervous systems.