Metro rail is one of the greatest achievements of Bangladesh. Find out the correct sentence. (১৮তম শিক্ষক নিবন্ধন স্কুল: ২০২৪)

The correct answer is option (b) "Very few achievements of Bangladesh are as great as Metro rail." The sentence uses a superlative ('one of the greatest'), which can be converted to positive degree using 'very few...as...as'. Superlative → Positive: 'One of the greatest' = 'Very few are as great as'. ✗ Option (c) would be correct if it said 'one of the greatest' → 'greater than most other', but 'greater than any other' implies unique greatness (the greatest), not one of the greatest. Source: English Grammar — Degree of Comparison.