Operation Flood deals with:

The correct option is Nationwide Milk Grid.

Explanation:
Operation Flood, launched on 13 January 1970, was the world's largest agricultural dairy development programme and a landmark project of India's National Dairy Development Board (NDDB). It transformed India from a milk-deficient nation into the world's largest milk producer, surpassing the United States of America in 1998.

This monumental initiative is also famously known as the White Revolution of India. The primary objective of Operation Flood was to create a nationwide milk grid, connecting producers throughout India with consumers in over 700 towns and cities. This grid bypassed intermediaries, reducing seasonal price variations and ensuring that the producer received a major share of the price paid by consumers, while also ensuring quality milk for consumers at reasonable prices.