Final answer:
Benzotropine is an anticholinergic medication used to treat acute dystonia, an extrapyramidal side effect of chlorpromazine, and not for neuroleptic malignant syndrome, tardive dyskinesia, or orthostatic hypotension.
Step-by-step explanation:
In reviewing the medication administration record for a client experiencing adverse effects of chlorpromazine, it is important to recognize which side effect benzotropine can alleviate. Benzotropine is an anticholinergic medication that is used to treat acute dystonia, which is one of the extrapyramidal side effects associated with chlorpromazine use. It would not be effective for neuroleptic malignant syndrome, tardive dyskinesia, or orthostatic hypotension, as these conditions are either treated differently or are not directly related to the cholinergic system that benzotropine affects.