Which doctor's order would assist in achieving a patient's maximum functional independence?

The correct choice is to focus on Activities of Daily Living (ADL). The main goal of promoting a patient's maximum functional independence revolves around their ability to perform ADLs, which include fundamental daily tasks such as bathing, dressing, eating, grooming, and mobility. By enhancing a patient's proficiency in these areas, healthcare providers can significantly improve their overall quality of life and autonomy.

Although physical therapy (PT), occupational therapy (OT), and respiratory therapy (RT) play important roles in patient care, ADLs are specifically targeted to empower patients to manage their everyday activities independently. Occupational therapy, for example, does work on ADLs but focuses more broadly on adapting tasks and environments to meet individual needs, while physical therapy is primarily concerned with movement and strength. Respiratory therapy is aimed at improving patients' breathing and pulmonary function, which is crucial but does not directly correlate with promoting functional independence in daily living tasks. The emphasis on ADLs aligns directly with the objective of fostering independence, making it the most relevant order in this context.