Final answer:
In patient-centered care, activities such as providing a back rub at bedtime, offering a warm washcloth before meals, and changing bed linens for a sweating patient are all focused on enhancing the patient's physical comfort.
Step-by-step explanation:
The principle of patient-centered care is at the forefront of modern nursing practice, aiming to address not only the clinical needs but also the holistic wellbeing of patients, including their comfort and dignity. When evaluating the activities centered around the principle of physical comfort, several actions performed by a nurse could directly contribute to a patient's comfort level.
Providing a back rub at bedtime, offering a warm washcloth for hands before eating, and changing bed linens for a patient experiencing diaphoresis are all activities that primarily focus on the patient's physical comfort, ensuring that the patient feels at ease and well-cared-for during their stay in the healthcare facility.