Correct Answer: C

Rationale: When assisting a client to get up in a chair, it is essential to use a wide base of support to maintain stability and prevent injuries. Spreading the feet apart provides a broader base, increasing balance and support for both the client and the caregiver. This position helps distribute the weight evenly and allows for better control when assisting the client in moving.

Correct Answer: B

Rationale: 1 cc (cubic centimeter) is equal to 1 ml. Therefore, 20 cc is equal to 20 ml. To convert between cubic centimeters (cc) and milliliters (ml), the values are equivalent, as they both measure volume in the metric system.

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: The knee-chest position is the most optimal position for examining the rectum. In this position, the patient kneels on the examination table with their chest resting on it, creating a straight line from the head to the lower back. This position allows for easier access and visualization of the rectal area, making it the preferred choice for rectal examinations.

Correct Answer: A

Rationale: The left atrium receives oxygenated blood from the lungs via the pulmonary veins. This oxygen-rich blood is then pumped into the left ventricle before being circulated throughout the body. The right atrium, on the other hand, receives deoxygenated blood from the body via the vena cava.