The practical nurse (PN) observes an unlicensed assistive personnel (UAP) obtain a client's vital signs. The PN should intervene when observing the UAP performing which technique?

A. Ask the client to relax arm before taking blood pressure: Having the client relax the arm is appropriate and helps ensure an accurate blood pressure reading. This technique does not require correction or demonstration by the PN. B. Palpates brachial artery before inflating blood pressure cuff: Palpating the brachial artery prior to cuff inflation is a correct step in locating the artery for accurate blood pressure measurement. The UAP performing this action demonstrates proper technique. C. Inserts thermometer into sublingual pocket after client sips water: Placing a thermometer immediately after the client has sipped water can result in inaccurate temperature readings. The PN should demonstrate the correct technique, including waiting an appropriate amount of time after fluid intake before taking an oral temperature. D. Counts the client's respirations while palpating radial pulse: Counting respirations while still holding the wrist as if taking the pulse is the correct technique to prevent the client from becoming conscious of the measurement, which could cause them to alter their breathing pattern.