1. Multiple Choice: Which neurotransmitter is most commonly associated with the pathophysiology of depression? a) Dopamine b) Serotonin c) Acetylcholine d) GABA Answer: b) Serotonin Rationale: Serotonin is a neurotransmitter that has been found to be significantly linked with depression. Lower levels of serotonin are associated with mood disorders, particularly depression. 2. True/False: Electroconvulsive therapy (ECT) is only used for patients with severe, treatment-resistant depression. Answer: False Rationale: While ECT is often used in severe, treatment-resistant depression, it is also utilized in the management of bipolar disorder, schizophrenia, and other mental health conditions where rapid symptom relief is necessary. 3. Fill-in-the-Blank: Th