Final answer:
The correct response is to verify with the primary care provider before the patient takes the medication, ensuring the safety and accuracy of medication administration.
Step-by-step explanation:
The most appropriate response when a client questions a medication listed on the CMAR/MAR is: a) "Don't take that pill yet.
I will verify that the medication was ordered by your primary care provider." This response demonstrates appropriate caution, ensuring patient safety by verifying medication orders before administration. Nurses are responsible for administering medication correctly as part of the five rights of medication administration, which include the right patient, the right drug, the right dose, the right route, and the right time. It is essential to ensure that a new medication is indeed intended for the patient, and it reflects a nurse's due diligence and adherence to professional standards of care.