The correct answer is option 2: Milk production. The "White Revolution" is a term used to describe the dairy development program in India. It was initiated by the National Dairy Development Board (NDDB) in the 1970s to increase milk production and make India self-sufficient in milk and milk products.

The program focused on improving dairy farming practices, promoting artificial insemination to improve cattle breeds, providing better veterinary care, ensuring the availability of quality feed and fodder, and establishing milk collection and processing infrastructure.

By implementing these measures, India saw a significant increase in milk production, making it the largest producer of milk in the world. The White Revolution played a crucial role in uplifting the rural economy, improving nutrition, and reducing poverty in India. It also laid the foundation for the growth of the dairy industry, which continues to be an important sector in the Indian economy.