Answer:
The correct answer is cholinergic drugs.
Step-by-step explanation:
Cholinergic drugs refer to a broad variety of drugs that works on the parasympathetic nervous system. These drugs function by increasing the activities of acetylcholine, which is a chemical messenger or a neurotransmitter in the brain. The influences of upsurged acetylcholine are regarded as the everyday function of the body like digestion, salivation, relaxation of skeletal muscle, and constriction of pupils.
The cholinergic drugs function by preventing the enzyme, which dissociates acetylcholine, and results in the production of naturally occurring acetylcholine that lasts for a prolonged time.