The correct answer is: C. 1960.
The Punjab Boundary Commission was a commission set up by the Indian Independence Act 1947 to demarcate the boundary between the newly independent dominions of India and Pakistan. The commission was headed by Sir Cyril Radcliffe, a British lawyer, and submitted its report on 17 August 1947. The report was accepted by the Indian and Pakistani governments on 18 August 1947, and the boundary came into effect on 15 August 1947.
The commission’s report was controversial, and there were many objections to it. However, the report was accepted by the Indian and Pakistani governments, and the boundary has remained in place ever since.
Option A is incorrect because the Punjab Boundary Commission was not set up until 1947.
Option B is incorrect because the Punjab Boundary Commission submitted its report in 1960, not 1955.
Option D is incorrect because the Punjab Boundary Commission submitted its report in 1960, not 1966.