Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. PRT, OQS, NPR, ?AGASBMJSCGHADMOQAnswer: D. MOQ Read Explanation: Observe each position separately:First letters: P → O → N → M (decreasing by 1)Second letters: R → Q → P → O (decreasing by 1)Third letters: T → S → R → Q (decreasing by 1)So the next term is:M O QAnswer: MOQ Read more in App