The correct answer is: b) Copper, zinc, and lead.
Sikkim has deposits of copper, zinc, and lead. These minerals are found in the rocks of the Himalayas. The copper deposits are located in the western part of the state, while the zinc and lead deposits are located in the eastern part. The minerals are extracted from the rocks by mining. They are then used to make a variety of products, such as copper wire, zinc-plated steel, and lead batteries.
Iron ore and coal are also found in Sikkim, but they are not as abundant as copper, zinc, and lead. The iron ore deposits are located in the northern part of the state, while the coal deposits are located in the southern part. The minerals are extracted from the rocks by mining. They are then used to make a variety of products, such as iron and steel, and coal-fired power.
Gold and diamonds are not found in Sikkim.