The correct answer is option 2, Crude petroleum. The Black Revolution in India is related to the manufacturing of crude petroleum. This revolution refers to the significant increase in domestic oil production in India, which started in the 1970s. It was aimed at reducing the country`s dependency on imported oil and ensuring energy security. The government of India implemented various policies and initiatives to promote domestic exploration and production of crude oil. As a result, there was a substantial growth in oil production, which helped in meeting the country`s energy needs and reducing import costs. So, the Black Revolution in India is specifically related to the manufacturing of crude petroleum and its significant impact on the country`s energy sector.