What was the year of the inaugural full demographic survey in post-independence India?

The correct answer is 1951.

Step-by-step explanation:
1. Historical Background: India attained independence on August 15, 1947. Following independence, it became essential for the newly formed government to obtain accurate population data to guide national planning, resource allocation, and policy framework.
2. Inaugural Post-Independence Census: The first full demographic survey (Census of India) conducted in post-independence India took place in 1951 (conducted from February 9 to February 28, 1951).
3. Significance: This census was the 9th decennial census in the continuous series that started under British rule in 1872, but it was the first official census executed under the provisions of the Census Act of 1948 in independent India.