A nurse is caring for a client who has schizophrenia and is receiving clozapine. For which of the following findings should the nurse monitor to determine if the medication is having a therapeutic effect?

The correct answer is A: Decreased auditory hallucinations. Clozapine is an antipsychotic medication commonly used to treat schizophrenia. Monitoring for decreased auditory hallucinations is essential to determine if the medication is effective in managing the client's psychotic symptoms. Auditory hallucinations are a prominent feature of schizophrenia, and reduction in these hallucinations indicates that the medication is helping to alleviate the positive symptoms of the disorder. Choices B, C, and D are incorrect because control of seizure activity, weight gain, and decreased WBC count are not directly related to the therapeutic effect of clozapine in managing schizophrenia symptoms. Weight gain is a common side effect of clozapine, while monitoring for decreased WBC count is important due to the risk of agranulocytosis associated with clozapine.