Final answer:
The nurse is using a mind-body method as a nonpharmacological intervention for pain control by leading meditation exercises for patients.
Step-by-step explanation:
The nurse is recognizing the use of a mind-body method as a type of nonpharmacological intervention for pain control. Meditation is a technique that is used to promote relaxation and stress reduction which may help in managing pain, among other health benefits. The meditative practice described involves sitting in a comfortable position in a quiet environment, focusing on a mantra or pleasant thoughts, which aligns with mind-body methods that integrate the mental and physical aspects to enhance health and well-being.