A nurse is preparing to administer a unit of packed red blood cells to a client. Which of the following actions should the nurse take?

The correct answer is B: Verify the client's identity with another nurse. This action is crucial to ensure that the right patient receives the correct blood product, preventing errors and adverse reactions. Priming IV tubing with a specific solution (choice A) is not necessary for packed red blood cells. Administering the transfusion over 6 hours (choice C) is not a standard practice for packed red blood cells. Obtaining vital signs every hour (choice D) is important, but verifying the client's identity is the priority to ensure patient safety.