A nurse is developing a teaching plan for an older adult client who has a new prescription for insulin glargine. Which of the following expected outcomes should the nurse include in the plan?

The correct answer is D: The client will wear his reading glasses when drawing up a dose of insulin glargine. This is important to ensure accurate dosage measurement and injection technique, preventing medication errors. Option A is incorrect as insulin glargine is usually given once daily, not before each meal. Option B is incorrect because the deltoid muscle is not a recommended site for insulin injection due to inconsistent absorption. Option C is incorrect as additional doses should not be taken without consulting healthcare provider. Option D is correct as it emphasizes safety and accuracy in insulin administration.