The ceremony that marks the end of Republic Day celebrations is ________.

Correct option is A

The ceremony that marks the end of Republic Day celebrations is the Beating Retreat ceremony. This ceremony is held on the evening of January 29, the third day after the Republic Day. It is performed by the bands of the Indian Army, Indian Navy, and Indian Air Force and pipe bands from the Army, plus from 2016 a massed formation of bands of the Central Armed Police Forces and the Delhi Police.
The venue is Raisina Hills and an adjacent square, Vijay Chowk, flanked by the North and South blocks of the Central Secretariat and the Rashtrapati Bhavan (President's Palace) towards the end of Rajpath.
The ceremony was started in 1955 and has been a hallmark of Republic Day celebrations ever since. The chief guest of the function is the President of India who arrives escorted by the President's Bodyguard (PBG).