Which neurotransmitter is named in the material as contributing to the modulation of synaptic strength and learning?

### Why this is right Acetylcholine is one of the neurotransmitters listed as helping modulate synaptic strength and support learning. Glutamate and dopamine are also listed. ### The concept A neurotransmitter is a chemical messenger used by neurons. The course material emphasizes that several neurotransmitters participate in learning-related modulation; it does not assign learning to a single chemical alone. ### The other options - **Insulin**: a hormone not identified in the material as a learning neurotransmitter. - **Cortisol**: not one of the listed neurotransmitters in this section. - **Melatonin**: not one of the listed neurotransmitters in this section. ### Terms - **Acetylcholine**: a neurotransmitter listed as contributing to learning-related modulation. - **Neurotransmitter**: a chemical messenger used for communication between neurons. ### Remember The three named here are glutamate, dopamine, and acetylcholine.