Solution

The logic follows: First letter is replaced by second succeeding letter, then second letter is replaced with second preceding letter. Similarly. All alternate alphabets are replaced by second succeeding and second preceding letters as per the English Alphabetical series. For the word ‘OBLIGATE’ coded as ‘QZNGIYVC’. ‘O’ → ‘Q’ (second succeeding) ‘B’ → ‘Z’ (second preceding) ‘L’ → ‘N’ (second succeeding) ‘I’ → ‘G’ (second preceding) ‘G’ → ‘I’ (second succeeding) ‘A’ → ‘Y’ (second preceding) ‘T’ → ‘V’ (second succeeding) ‘E’ → ‘C’ (second preceding) Similarly, for ‘DOCUMENT’: ‘D’ → ‘F’ ‘O’ → ‘M’ ‘C’ → ‘E’ ‘U’ → ‘S’ ‘M’ → ‘O’ ‘E’ → ‘C’ ‘N’ → ‘P’ ‘T’ → ‘R’ Hence, the code for ‘DOCUMENT’ is ‘FMESOCPR’, and the correct answer is (a).