Answer : 4. "NSG"
Explanation :

Union Home Minister, Amit Shah, on October 02, 2021, as a part of 'Azadi Ka Amrit Mahotsav' to celebrate the 75th year of India's Independence, the National Security Guard – Flagged off NSG's All India Car Rally 'Sudarshan Bharat Parikrama'. The NSG car rally was flagged off from the historic Red Fort in Delhi. The rally ended at the Police Memorial in New Delhi on October 30, 2021.