15 January is celebrated as :

Labour Day
Makar Sakranti
Army Day
Republic Day

The correct answer is: D. Republic Day

Republic Day is a national holiday in India, celebrated every year on 26 January. It commemorates the adoption of the Constitution of India on 26 January 1950. The Constitution replaced the Government of India Act 1935 as the governing document of India and marked the formal end of British rule in India.

The day is celebrated with a grand parade in New Delhi, which is attended by the President, Prime Minister, and other dignitaries. The parade features floats, tableaux, and performances by the Indian Armed Forces. It is also a public holiday, and people across the country celebrate with family and friends.

Other options:

  • A. Labour Day is celebrated on 1 May. It is a public holiday in many countries, and is a day to celebrate the achievements of workers and to promote workers’ rights.
  • B. Makar Sakranti is a Hindu festival that marks the beginning of the harvest season. It is celebrated on different dates in different parts of India, but usually falls in January or February.
  • C. Army Day is celebrated on 15 January. It is a day to commemorate the Indian Army and to pay tribute to the soldiers who have died in service of the country.