Final answer:
The application of TED hose by a helper is categorized as set up help in the assessment of dressing activities.
Step-by-step explanation:
In the assessment of dressing activities, the application of TED hose by a helper is categorized as b) Set up help. Set up help refers to the assistance provided by a helper to prepare the necessary items or provide the tools for the individual to perform a task themselves. In this case, the helper is assisting by applying the TED hose, which is a type of compression garment used to prevent deep vein thrombosis.