Which technician's statement about battery cable removal is correct?

The statement regarding battery cable removal indicates that the correct procedure is to disconnect the negative cable first. This practice is critical for safety reasons. When the negative terminal is disconnected first, it reduces the risk of accidental short circuits. If the positive terminal is disconnected first, there is a possibility that any tools or metal objects that come into contact with the vehicle’s grounded body or components could create a short circuit, potentially leading to electric shock, fire, or damage to the vehicle’s electrical system.

By removing the negative cable first, any remaining electrical potential is minimized, allowing the technician to work more safely on the battery or electrical system. This approach ensures that the technician can avoid creating a connection between the positive terminal and ground inadvertently, which is vital for preventing electrical hazards during the maintenance or repair of the vehicle's electrical components.