Correct option is B
The correct answer is (b) 1955.
· Jawaharlal Nehru laid the foundation stone of the National Museum in New Delhi on 12 May 1955.
· The museum officially opened to the public on 15 August 1949 but the formal foundation stone was laid in 1955.
· The National Museum is one of the largest museums in India, showcasing a vast collection of artifacts spanning 5,000 years of Indian culture and history.
· The first phase of the National Museumbuilding was formally inaugurated by Dr. SarvepalliRadhakrishnan, the Vice President of India, on December 18, 1960.