A nurse is administering a dose of insulin to a patient. To practice nursing safely and effectively, the nurse should:

Choice A reason: Administering insulin at proper timing correlates with mealtimes. However, this alone doesn't ensure safe practice. Choice B reason: Confirming the injection site prevents lipodystrophy but does not address dose accuracy, which is vital for safety. Choice C reason: Insulin is injected subcutaneously, not in the deltoid muscle. Using incorrect sites disrupts absorption. Choice D reason: Double-checking insulin dose prevents administration errors, ensuring compliance with medication safety protocols.