Final answer:
Joe Sanderson's symptoms are characteristic of cerebral palsy, a condition affecting movement and muscle coordination caused by damage to the developing brain.
Step-by-step explanation:
Given the symptoms described for Joe Sanderson, such as dependence on staff for his daily activities, inability to use his extremities, and the requirement for foods at puree consistency and fluids at thick consistency, it is evident that Joe has a condition affecting his movement and physical capabilities. While several conditions can result in physical disabilities, the specific characteristics of Joe's condition, such as no use of his extremities and the type of consistent care required, mostly align with the description of cerebral palsy. This condition is caused by injury to the developing brain and affects brain areas responsible for controlling body movements.