The correct answer is (c), Punjab.
The training and visit system (T&V) is a system of agricultural extension that was developed in the 1960s by the Indian Council of Agricultural Research (ICAR). The system was designed to provide farmers with timely and accurate information on agricultural practices, and to help them improve their yields.
The T&V system was first adopted in Punjab in 1966. The system was successful in Punjab, and it was later adopted by other states in India. The T&V system has also been adopted by other countries, including Bangladesh, Indonesia, and the Philippines.
The T&V system is based on the following principles:
- Farmers should be the focus of agricultural extension.
- Extension workers should be trained in the latest agricultural practices.
- Extension workers should visit farmers regularly to provide them with information and advice.
- Extension workers should work closely with research scientists to ensure that they are providing farmers with the latest information.
The T&V system has been successful in increasing agricultural productivity in India and other countries. The system has also helped to improve the lives of farmers by providing them with the information and resources they need to improve their yields.
The other options are incorrect because they are not the first state which adopted the training and visit system of agricultural expansion.