Final answer:
Nursing Assistants commonly monitor a resident's pulse rate by checking the radial pulse at the wrist, pressing lightly with the fingertips to feel the heartbeat.
Step-by-step explanation:
To monitor a resident's pulse rate, the NA (Nursing Assistant) will most commonly check the radial pulse. The radial artery, located at the wrist, is preferred because it is easily accessible and provides a reliable indication of heart rate. The procedure involves placing the tips of the fingers over this artery and pressing lightly to feel the pulse.