Lightning conductor is made up of

The correct answer is (a) Copper.

A lightning conductor is a metal rod that is mounted on a tall structure, such as a building or a tree. The rod is connected to a ground wire, which helps to direct lightning strikes away from the structure. Copper is a good conductor of electricity, which makes it ideal for use in lightning conductors.

Glass is an insulator, which means that it does not conduct electricity. Ebonite is also an insulator. Therefore, (b) and (c) are incorrect answers.

Lightning conductors are an important safety feature for buildings and other structures. They can help to protect people and property from the damage caused by lightning strikes.