The most suitable metal that can be used as lightning conductor is

A lightning conductor, also known as a lightning rod, is a metal rod that is attached to the top of a building and extends to the ground. It is designed to protect the building and its occupants from lightning strikes by providing a path for the lightning to follow into the ground, where it can be harmlessly dissipated. The most suitable metal that can be used as a lightning conductor should have good electrical conductivity and be resistant to corrosion. Out of the options given, the most suitable metal for a lightning conductor is copper. Copper has excellent electrical conductivity and is highly resistant to corrosion, making it an ideal material for lightning rods. Silver is also an excellent conductor, but it is too expensive to be used as a lightning conductor. Iron and aluminium are not as good conductors as copper and are more prone to corrosion.