Select the letter cluster from among the given options that can replace the question mark (?) in the following series . MNK, NOJ, OPI, PQH, ?AGFDBHJGCQRGDIJHAnswer: C. QRG Read Explanation: Observe each position separately.First lettersM, N, O, PM,\ N,\ O,\ PM, N, O, PEach increases by 1.Next:QSecond lettersN, O, P, QN,\ O,\ P,\ QN, O, P, QAgain increases by 1.Next:RThird lettersK, J, I, HK,\ J,\ I,\ HK, J, I, HDecreases by 1 each time.Next:GSo the next cluster is:QRG\boxed{QRG}QRG Read more in App