What is the primary need for a passenger categorized as WCHC?

A passenger categorized as WCHC, which stands for "Wheelchair Needed - Completely," has a primary need for being carried up and down the steps to and from the aircraft. This designation indicates that the individual requires substantial assistance due to severe mobility limitations and may not be able to manage independently even with the aid of a wheelchair.

In this context, the focus is on ensuring safe and comfortable transit from the terminal to the aircraft and vice versa, which often involves handling the individual, especially in situations where access to the aircraft isn't through a jet bridge but rather via steps. Such assistance is critical in providing the necessary support for those who cannot navigate without being physically helped.

While the other options involve various levels of mobility assistance, they do not encompass the complete reliance on assistance that WCHC passengers require.