Concept:Aluminium is a light, corrosion-resistant metal used in both overhead electric cables and paint manufacture.
Explanation:Overhead electric cables are commonly made of aluminium because it is lightweight, has good electrical conductivity, and is economical for long-distance transmission.
Aluminium powder is added to paints to give a metallic finish and to protect metal surfaces from rusting and corrosion.
Copper is an excellent conductor, but it is not widely used in making paints.
Iron and lead are heavy and do not serve both purposes effectively.
Therefore, aluminium is the metal that fits this combined use.
Answer:A. aluminium