KBC 2023| How many years is a quadrennial event conducted? KBC 2023, Check the answer to the question- How many years is a quadrennial event conducted? By Himani Budakoti - October 12, 2023 KBC 2023, Amitabh Bachchan. (Representative Image) KBC 2023, The options of the question – How many years is a quadrennial event conducted? A. 2 B. 4 C. 6 D. 8 The answer is B. 4.