The verified answer to “In a certain code, FLOWER is written as LOWERF. How will GOLD be written in that code?” is OLDG, option B. The source working states: Correct answer: OLDG (Option C). Apply the same unchanged rule to GOLD: G→O, O→L, L→D, D→G. Therefore the required code is OLDG. Wrong options: HPME is wrong because it does not reproduce the verified rule at every position; IQNF is wrong because it does not reproduce the verified rule at every position; FNKC is wrong because it does not reproduce the verified rule at every position. Even one mismatched position invalidates a code, so only Option C is correct. This observation must be confirmed across every available letter position or every consecutive term before it is applied to the missing code. Applying the verified rule to the target expression produces OLDG. The alternatives IQNF, FNKC and HPME fail because at least one position does not obey the same transformation. A useful final check is to map OLDG backward through the inverse operation and confirm that the original target is recovered.