Final answer:
Acetylcholine could act as the neurotransmitter in a chemical synapse.
Step-by-step explanation:
In a chemical synapse, the neurotransmitter is a molecule that carries signals between neurons. Based on the options given, acetylcholine could act as the neurotransmitter in a chemical synapse. Acetylcholine is a common neurotransmitter in the central nervous system and is involved in functions such as muscle movement and memory.
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