Multiple choice Directions: Identify the part having an error. If no part has an error, mark (5). To transport goods by sea is cheaper than land No error Reveal answer Fill a bubble to check yourself D Correct answer Explanation For proper parallel structure, the comparison should be 'by sea' vs 'by land'. Saying 'than land' breaks the grammatical pattern established in the first part. The correct phrase should be 'Transporting goods by sea is cheaper than by land'.