Final answer:
Levodopa (L-DOPA) is the medication that should be administered to clients with Parkinson's disease experiencing extrapyramidal side effects.
Step-by-step explanation:
L-DOPA (levodopa) is the medication that should be administered to clients with Parkinson's disease experiencing extrapyramidal side effects. L-DOPA is converted into dopamine in the brain and helps compensate for the loss of dopaminergic neurons. It is one of the most commonly prescribed drugs for Parkinson's disease. Other medications like dopamine agonists, anticholinergic drugs, and MAO-B inhibitors may also be used as alternative treatments depending on the individual's specific symptoms and response to therapy.