The correct answer is option 1, which states that statement 1 is correct and statement 2 is incorrect.

Statement 1 says that the USSR assisted in the building of the Bhilai Steel Plant. This statement is correct. The USSR, or the Soviet Union, played a significant role in the development of the Bhilai Steel Plant in India. The plant was constructed with Soviet assistance and expertise in the 1950s, as part of India`s efforts to become self-sufficient in steel production.

Statement 2 says that the British assisted in the building of the Bokaro Steel Plant. This statement is incorrect. The Bokaro Steel Plant, located in Jharkhand, India, was not built with British assistance. Instead, it was a collaboration between the Indian government and the Soviet Union. The Bokaro Steel Plant was constructed in the 1960s as a part of India`s efforts to expand its steel production capacity.

In summary, option 1 is correct because statement 1 is true and statement 2 is false. The USSR did assist in the building of the Bhilai Steel Plant, but the British did not assist in the building of the Bokaro Steel Plant.