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?

Ask the client to relax arm before taking blood the pressure.

Palpates brachial artery before inflating blood pressure cuff.

Inserts thermometer into sublingual pocket after client sips water.

Counts the client's respirations while palpating radial pulse.