Final answer:
The minimum distance for installing a warning line system from a roof edge with no mechanical equipment is a stipulated distance of 6 feet according to OSHA regulations.
Step-by-step explanation:
The minimum distance from a roof edge (with no mechanical equipment) where a warning line system can be installed is Option 1: Stipulated. According to Occupational Safety and Health Administration (OSHA) regulations, the warning line must be erected around all sides of the roof work area at a minimum of 6 feet (1.8 meters) from the roof edge. The purpose of the warning line system is to alert workers that they are nearing an unprotected roof edge, providing a visual boundary that indicates the presence of a fall hazard.