The physical therapist assistant may follow a treatment plan designed by:

The physical therapist assistant (PTA) operates under the supervision and direction of a licensed physical therapist, which is why the choice indicating a physical therapist is the correct response. The physical therapist is responsible for evaluating the patient, developing a comprehensive treatment plan, and ensuring that all treatment is appropriate and effectively tailored to the patient’s needs.

While occupational therapists and physicians play crucial roles in a patient's overall healthcare, they do not directly create treatment plans for physical therapy services that a PTA is legally permitted to implement. The PTA's scope of practice specifically requires adherence to a plan developed by a licensed physical therapist, ensuring that their work aligns with the standards of physical therapy as defined by law and professional guidelines. This structure is vital for maintaining the safety and efficacy of patient care within the realm of physical rehabilitation.