Step 1: Understanding the Question:
Four clinical conditions in List I must each be matched to the drug used to manage them in List II, then the correct code selected.
Step 2: Key Concept or Approach:
Match each condition to its drug one at a time using standard psychiatric practice, then check which coded option reflects that full set of pairs.
Step 3: Working Through the Options:
Delirium with marked agitation is settled with a sedating benzodiazepine, giving A-3. Alzheimer's disease is managed with a cholinesterase inhibitor, and donepezil is the standard one, giving B-2. Schizophrenia is treated with an antipsychotic, and risperidone, an atypical agent, is the drug listed for it, giving C-1. Once benzodiazepines, donepezil, and risperidone are assigned to A, B, and C, haloperidol is left for D, acute extrapyramidal symptoms in a patient already on antipsychotic treatment, where a sedating agent is used to control the acute reaction while the offending drug is adjusted. Putting these together gives A-3, B-2, C-1, D-4, which is the first coded option. The second option swaps B and C, wrongly giving Alzheimer's disease risperidone and schizophrenia donepezil, and the third option additionally swaps A and D, so both fail to match the standard drug-to-condition pairing.
Step 4: Conclusion:
The correct answer is A-3, B-2, C-1, D-4.