In India, the latter ceremony developed (A) its origins to the early 1950s when Major Roberts of the Indian Army traces (B) a unique ceremony of display (C) by the massed bands, according (D) to the Defence Ministry.

Explanation

After the word developed, the preposition ‘to’ is incorrect and wouldn’t provide a proper meaning to the sentences. But ‘traces…to’ is correct. So, A-B should be exchanged. C and D are correct at their respective places. In India, the latter ceremony traces its origins to the early 1950s when Major Roberts of the Indian Army developed a unique ceremony of display by the massed bands, according to the Defence Ministry. IBPS SO (RA/LO) 2021 Prelims Previous Year Paper