The correct answer is: c) Demonstrate modern farming techniques.
The Central State Farms in Punjab were established in 1956 to demonstrate modern farming techniques to farmers in the region. The farms were equipped with the latest agricultural machinery and technology, and they were staffed by experienced farmers who were able to train local farmers in the latest methods of cultivation. The farms also played a role in promoting the use of high-quality seeds and fertilizers, and they helped to improve the quality of agricultural produce in the region.
Option a) is incorrect because the Central State Farms were not established to promote the export of agricultural produce. The farms were primarily focused on demonstrating modern farming techniques to local farmers.
Option b) is incorrect because the Central State Farms were not established to produce high-quality seeds. The farms did produce seeds, but this was not their primary focus.
Option d) is incorrect because the Central State Farms were not established to provide land to landless farmers. The farms were established to demonstrate modern farming techniques to local farmers.