Final answer:
The incontinent client with limited mobility is at greatest risk for pressure ulcers due to the additional skin breakdown from moisture and unrelieved pressure on skin over bony areas.
Step-by-step explanation:
Among the clients described, the nurse would assess the incontinent client with limited mobility to be at the greatest risk for pressure ulcer development. Incontinence introduces moisture which can break down skin, while limited mobility leads to prolonged pressure on bony areas without relief. This combination significantly increases the risk of tissue necrosis and the development of pressure ulcers. Regular repositioning and skin care are essential in preventing bedsores.