What is the primary duty associated with the concept of beneficence?

Beneficence is a fundamental ethical principle in healthcare, particularly in physical therapy, which emphasizes the obligation of healthcare providers to act in the best interest of their patients. This includes promoting good, preventing harm, and contributing to the welfare of patients. When healthcare providers ensure that their actions contribute positively to the patient's health and well-being, they are embodying the principle of beneficence.

This principle recognizes the importance of not only providing treatment but also considering the benefits and potential outcomes of interventions, always aiming to enhance the patient's quality of life and support their overall health goals. Thus, the primary duty associated with beneficence is indeed to do good, making it the correct answer in this context.