The verified answer to “In a certain code, METAL is written as LATEM. The source working states: Correct answer: REWOLF (Option B). Apply the same unchanged rule to FLOWER: F→R, L→E, O→W, W→O, E→L, R→F. Therefore the required code is REWOLF. Wrong options: GMPXFS is wrong because it does not reproduce the verified rule at every position; HNQYGT is wrong because it does not reproduce the verified rule at every position; EKNVDQ is wrong because it does not reproduce the verified rule at every position. Even one mismatched position invalidates a code, so only Option B 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 REWOLF. The alternatives HNQYGT, EKNVDQ and GMPXFS fail because at least one position does not obey the same transformation. A useful final check is to map REWOLF backward through the inverse operation and confirm that the original target is recovered.