Final answer:
The American Occupational Therapy Association (AOTA) is the correct answer as they operate as a voluntary professional organization, thus, having no direct authority over occupational therapy personnel who are not members.
Step-by-step explanation:
As a voluntary professional organization, the American Occupational Therapy Association (AOTA) has no direct authority over occupational therapy personnel who are not its members. The AOTA is dedicated to supporting occupational therapy professionals through advocacy, education, and the promotion of practice standards with the ultimate goal of enhancing the quality of occupational therapy services. Unlike governmental agencies like the Occupational Safety and Health Administration (OSHA), which has the legal mandate to enforce workplace safety standards and regulations, AOTA relies on voluntary membership where its influence is limited to those who choose to be members and adhere to its guidelines and professional codes of conduct.