Correct Answer: C

Rationale: The abbreviation 'PRN' stands for 'pro re nata,' which translates to 'when necessary.' This term is commonly used in medical contexts to indicate that a medication should be taken as needed, not at scheduled intervals.

Correct Answer: A

Rationale: Back Care involves caring for the back through activities such as massage, exercises, proper posture, and ergonomic practices to maintain spinal health and prevent injuries. Massage helps relieve muscle tension, improve circulation, and promote relaxation, making it an effective method for back care.

Correct Answer: B

Rationale: Verifying the client's identity before administering medication is crucial to ensure patient safety. Checking the client's identification band is the safest and most reliable method to confirm the client's identity. Identification bands are specifically designed to prevent errors in patient identification and help healthcare professionals administer care to the correct individual.

Correct Answer: C

Rationale: Auscultation involves listening to internal sounds in the body, such as heart and lung sounds. The instrument used for auscultation is a stethoscope, which allows healthcare providers to listen to these sounds. Percussion hammer is used to elicit sounds on the body, audiometer is used to measure hearing ability, and sphygmomanometer is used to measure blood pressure.

Correct Answer: A

Rationale: In medical abbreviations, 'TID' stands for 'ter in die,' which means three times a day, and 'p.o.' stands for 'per os,' which means orally. Therefore, the correct administration schedule for the ampicillin capsule is three times a day orally.