Telangana has significant reserves of:

The correct answer is: A) Coal

Telangana is one of the largest producers of coal in India. The state has estimated reserves of over 6 billion tonnes of coal, which is about 10% of India’s total coal reserves. The coal in Telangana is of high quality and is used to generate electricity, produce steel, and make cement.

The other options are incorrect because:

• Limestone is a type of rock that is used to make cement, lime, and other building materials. Telangana does have significant reserves of limestone, but it is not as important as coal.
• Iron ore is a type of rock that is used to make steel. Telangana does have some iron ore reserves, but they are not as large as the coal reserves.
• Granite is a type of igneous rock that is used to make building materials and countertops. Telangana does have some granite reserves, but they are not as important as the coal reserves.