Final answer:
In the commercial diving industry, multiplace chambers are the most common type of chamber used. These chambers are large enough to treat multiple patients at once, and the staff attending the patients is present inside the chamber.
Step-by-step explanation:
In the commercial diving industry, the most common type of chamber used is a multiplace chamber. These chambers are large enough to treat multiple patients at once, and the staff attending the patients is present inside the chamber. In a multiplace chamber, patients are often treated with air via a mask or hood, and the chamber is pressurized.