Final answer:
A standard walker has four legs and requires the user to lift and move it forward with each step. A rolling walker has wheels on the front legs, making it easier to push. A reciprocal walker modified 3 point (PWB) allows the user to bear weight on both legs while walking.
Step-by-step explanation:
A standard walker is a device used by individuals with mobility issues to help them walk independently. It has four legs and requires the user to lift and move it forward with each step. A rolling walker, also known as a wheeled walker, has wheels on the front legs, allowing the user to push it without having to lift it. It provides more stability and ease of movement compared to a standard walker. A reciprocal walker modified 3 point (PWB) is a type of walker that allows the user to bear weight on both legs while walking. It consists of a frame with handles and wheels, and it provides support and assistance to individuals with balance and mobility issues.