Final answer:
The nurse should administer Medication C to the client undergoing hemodialysis experiencing muscle cramps and tingling sensation in their hands.
Step-by-step explanation:
The nurse should plan to administer Medication C to the client who is undergoing hemodialysis and experiencing muscle cramps and tingling sensation in their hands. This is likely due to electrolyte imbalances that can occur during hemodialysis. Medication C is most likely a calcium channel blocker, which can help relieve muscle cramps and tingling sensations.