People with depression often have low levels of serotonin, which is critical for mood regulation. Among the given options, serotonin is the neurotransmitter most commonly linked to depressive symptoms. Therefore, the correct answer is option B, serotonin.
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People suffering from depression typically have low levels of serotonin , which is crucial for mood regulation. While other neurotransmitters and brain activities may be involved, serotonin is the most directly associated with depressive symptoms. Therefore, the correct answer is option B, serotonin. ;