Select the option that expresses the given sentence in superlative degree of comparison.
This type is the quiet and most efficient style of humidifier.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. This type is the quietest and most efficient style of humidifier.
Error concept: Degree of adjective
What is wrong: The adjective “quiet” needs to be in the superlative form to match “most efficient.”
Grammatical concept: When comparing two qualities in the superlative, both adjectives should be in the superlative form if they refer to the same noun.
Incorrectness of the concept in context: The given sentence says “quiet and most efficient”, which mixes positive degree (“quiet”) with superlative degree (“most efficient”).
How to correct + extra concept (if any): Change "quiet" to "quietest".
Correction: quietest and most efficient
Final sentence: This type is the quietest and most efficient style of humidifier.