You Have a High Caseload on the Rehabilitation Unit, and Your

You have a high caseload on the rehabilitation unit, and your therapy aide is assisting you with treatment sessions. Where must the therapy aide be to provide therapeutic activities in a legally appropriate manner?

A) Somewhere in the same building as you.
B) Somewhere in the same room as you.
C) Within your direct line of vision.
D) Right next to you.