1. Which neurotransmitter is primarily targeted by selective serotonin reuptake inhibitors (SSRIs)? A. Dopamine B. Serotonin C. GABA D. Epinephrine Answer: B. Serotonin Rationale: SSRIs work by blocking the reabsorption (reuptake) of serotonin in the brain, leading to increased levels of the neurotransmitter in the synapse. 2. Which class of psychotropic medications is commonly used to treat bipolar disorder? A. Antidepressants B. Anti-anxiety medications C. Mood stabilizers D. Antipsychotics Answer: C. Mood stabilizers Rationale: Mood stabilizers, such as lithium and valproate, are commonly used to treat the manic and depressive symptoms of bipolar disorder.