Question

the neurotransmitter ______ plays a role in memory.
○ dopamine
○ glutamate
○ gaba
○ blurry text

Explanation:

Glutamate is a major excitatory neurotransmitter crucial for synaptic plasticity, which underlies memory formation and learning. Dopamine is more for reward/motivation, GABA is inhibitory, and serotonin relates to mood/sleep.

Answer:

B. glutamate (assuming the second option is labeled B; adjust label if needed, but the correct neurotransmitter for memory here is glutamate)