KBC 2023| Which of the following is not a source of light? KBC 2023, Check the answer to the question- Which of the following is not a source of light? By Himani Budakoti - September 29, 2023 KBC 2023, Amitabh Bachchan. (Representative Image) KBC 2023, The options of the question – Which of the following is not a source of light? A. Fire B. Flames C. Shadow D. Diya The answer is C. Shadow.