Final answer:
The Pneumatic Handpiece is the correct answer, as it utilizes air pressure to reach high speeds for medical and dental procedures.
Step-by-step explanation:
The Pneumatic Handpiece operates from air pressure and reaches speeds up to 450,000 RPM. The correct answer to the question is B) Pneumatic. Handpieces that run on air pressure are essential in various medical and dental procedures, allowing precision work at high speeds. Unlike electric handpieces, pneumatic ones utilize air-driven turbines to achieve their high rate of revolution.