What color does the clearance light indicator of the M1120 illuminate when the master lighting switch is on?

Answer: C — Green

The clearance light indicator of the M1120 illuminates green when the master lighting switch is activated. This color indicates that the clearance lights are operational and provides a quick visual cue to the driver regarding the status of these lights. Green is commonly used in vehicle indicators to signify that systems are functioning correctly. In this case, the illumination of the green light ensures that the driver can ensure visibility and compliance with safety regulations while operating the vehicle at night or in low-light conditions.