The correct answer is Degauss.The process used to remove magnetism from a cathode ray tube (CRT) computer monitor is called Degaussing.A cathode-ray tube is a vacuum tube containing one or more electron guns, the beams of which are manipulated to display images on a phosphorescent screen.In 1929 Zworykin invented the cathode-ray tube called the kinescope, sorely needed for television.CRT stands for Cathode Ray Tube. CRT is a technology used in traditional computer monitors and televisions.The image on the CRT display is created by firing electrons from the back of the tube of phosphorus located towards the front of the screen.Once the electron heats the phosphorus, they light up, and they are projected on a screen. The color you view on the screen is produced by a blend of red, blue, and green light.Cathode ray tube pictorial details are below: Important PointsComponents of CRT are:Electron Gun: Electron gun consisting of a series of elements, primarily a heating filament (heater) and a cathode.Control Electrode: It is used to turn the electron beam on and off.Focusing system: It is used to create a clear picture by focusing the electrons into a narrow beam.Deflection Yoke: It is used to control the direction of the electron beam.Phosphorus-coated screen: The inside front surface of every CRT is coated with phosphors.