Which of the following requires a primary health care provider's order?

Wheelchair cushions are typically considered assistive devices that can be prescribed or recommended by healthcare professionals but do not require a primary health care provider's order for general use. Patients or caregivers can often acquire them directly based on need for comfort or pressure relief.

Provision of an afternoon snack generally falls under routine dietary practices and does not need a specific order from a primary health care provider. Snacks are usually offered based on established meal plans or dietary guidelines rather than requiring direct authorization.

Hand rolls, which are often used for positioning or to prevent contractures, may be recommended by occupational or physical therapists. However, they do not necessarily require a primary health care provider's order for implementation, as they are typically part of standard care practices for patient comfort and mobility support.