Tamil Nadu is a major producer of:

Wind turbines and renewable energy equipment
Cement and construction materials
Electrical machinery
All of the above

The correct answer is: d) All of the above.

Tamil Nadu is a major producer of wind turbines and renewable energy equipment, cement and construction materials, and electrical machinery.

Tamil Nadu is the largest producer of wind turbines in India, accounting for over 50% of the country’s installed wind power capacity. The state has a number of wind farms, including the largest onshore wind farm in India, the Muppandal Wind Farm.

Tamil Nadu is also a major producer of cement and construction materials. The state is home to a number of cement plants, including the LafargeHolcim cement plant in Madurai.

Tamil Nadu is also a major producer of electrical machinery. The state is home to a number of electrical equipment manufacturers, including the Bharat Heavy Electricals Limited (BHEL) plant in Trichy.

In addition to these major industries, Tamil Nadu also produces a variety of other goods, including automobiles, textiles, and food products.