Correct Answer: 1970

Solution : The correct answer is (c) 1970.

The NDDB is an apex cooperative organization in India that promotes, plans, and organizes dairy development programs in the country. It was founded by the National Dairy Development Board Act of 1965, but it started functioning in 1970.

The primary objective of the NDDB is to strengthen and support the cooperative dairy sector in India. It works towards improving the productivity of dairy animals, enhancing milk production, promoting efficient milk procurement and processing systems, and ensuring fair and remunerative prices to dairy farmers.