National Dairy Research Institute is located at:

Karnal

The correct answer is Option (1) - Karnal

The National Dairy Research Institute (NDRI) is a premier research institution dedicated to dairy research and education in India. It is located in Karnal, Haryana, which is situated in the northern part of India. NDRI was established in 1923 by the Indian Council of Agricultural Research (ICAR) with the aim of promoting research and development in the dairy sector to enhance productivity, quality, and sustainability.