Final answer:
The first step in instructing a patient on how to use a walker is to ensure that all four tips of the walker are touching the floor to provide a stable base. Therefore, the correct option is B.
Step-by-step explanation:
When instructing a patient on how to use a walker for the first time, the health care team member should first ensure that the four tips of the walker are able to touch the floor simultaneously. This initial step is crucial for providing a stable base of support and increasing the stability for the patient. Prioritizing stability is essential as the walker is being used to improve balance and support during ambulation.
This approach is consistent with the concept that a larger base of support—achieved through the proper positioning of the walker—contributes to enhanced balance and stability. Once this is assured, the patient can be instructed on the usage of the device, including the correct sequence of steps and how to distribute their weight appropriately.