Final answer:
Grounding is the process of connecting a conductor to the earth with a good conductor to fix it at zero volts. It is important for safety in electrical systems.
Step-by-step explanation:
Grounding is the process by which a conductor is connected to the earth with a good conductor, fixing it at zero volts. This is done to prevent electrical shock and ensure the safety of electrical systems. For example, in a power transmission line, the metal towers are grounded to protect against short circuits and lightning strikes.