Operation flood' related to

Answer: Option D

Operation flood' is related to Milk.
Operation Flood, launched on 13^th January 1970, was the world's largest dairy development program and a landmark project of India's National Dairy Development Board (NDDB).
Operation Flood is the program that led to "White Revolution." It created a national milk grid linking producers throughout India to consumers in over 700 towns and cities and reducing seasonal and regional price variations while ensuring that producers get a major share of the profit by eliminating the middlemen.