The correct answer is option 4: Durgapur. Durgapur Iron and Steel Plant was established in collaboration with the British. It was one of the first large-scale industrial projects in India after independence. The plant was set up in Durgapur, West Bengal, with the help of British consultants and engineers.

Option 1: Bhilai Steel Plant was not established with British collaboration. It was set up with the help of the Soviet Union in the 1950s.

Option 2: Rourkela Steel Plant was also not established with British collaboration. It was set up with the assistance of Germany.

Option 3: Bokaro Steel Plant was a joint collaboration between the Government of India, the Soviet Union, and the United Kingdom. While the Soviet Union provided technical assistance, the British were not involved in its establishment.

Therefore, the correct answer is option 4: Durgapur.