The correct answer is: a) Lignite mining and thermal power generation.
Neyveli is a town in the Cuddalore district of Tamil Nadu, India. It is known for its lignite mines and thermal power plants. The Neyveli Lignite Corporation Limited (NLC) is a public sector undertaking that operates the mines and power plants. The NLC is the largest producer of lignite in India and the second largest producer of thermal power.
Lignite is a type of coal that is found in the Neyveli region. It is a low-grade coal that is used to generate electricity. The NLC has three thermal power plants in Neyveli with a total installed capacity of 2,400 MW. The power plants are fueled by lignite from the Neyveli mines.
Neyveli is also a major center for research and development in the field of lignite mining and thermal power generation. The NLC has a research and development center in Neyveli that is involved in developing new technologies for lignite mining and power generation.
The other options are incorrect because:
- Granite quarrying is not a major industry in Neyveli.
- Solar power production is a small industry in Neyveli.
- Beach sand mining is not a major industry in Neyveli.