A nurse working on a cardiac unit delegated taking vital signs to an experienced unlicensed assistive personnel (UAP). Four hours later, the nurse notes the client's blood pressure is much higher than previous readings, and the client's mental status has changed. What action by the nurse would most likely have prevented this negative outcome?
a. Determining if the UAP knew how to take blood pressure
b. Double-checking the UAP by taking another blood pressure
c. Providing more appropriate supervision of the UAP
d. Taking the blood pressure instead of delegating the task"