What defines the cleaning agent used for live line tools?

The correct answer identifies that a cleaning agent used for live line tools must effectively remove foreign matter. This is crucial because live line tools, which are used to perform maintenance or emergency work on electrical equipment without de-energizing the system, need to be kept clean to ensure their proper functioning and safety. Any foreign substances, such as dirt, oil, or other contaminants, can interfere with the tool’s effectiveness and potentially pose safety risks, including electrical hazards.

Effective removal of foreign matter also ensures that the integrity of the live line tools is maintained, which is essential for the safety of workers operating near live electrical sources. Maintaining cleanliness of these tools helps in preventing accidents and ensuring reliability during their usage.

The other options, while they may have certain characteristics, do not specifically address the primary requirement of a cleaning agent for live line tools, which is to ensure that all contaminants are removed effectively to maintain the tools' performance and safety.