Identify the sentence with the INCORRECT usage of the adverb.

Correct option is B

✔️ Option (b) contains the incorrect usage of the adverb.
Explanation:
The word “strenuous” is an adjective, not an adverb. The sentence structure requires an adverb to modify the verb “worked.”
Correct usage would be: “worked strenuously”
Correct sentence: The teacher noticed that all students worked strenuously to complete the project on time.
Grammatical rule used:
· Adverbs modify verbs, adjectives, or other adverbs.
· Adjectives (like strenuous) cannot be used to describe verbs directly.
Grammatical rule in Hindi:
Adverb का प्रयोग क्रिया (verb) की विशेषता बताने के लिए होता है। “Strenuous” एक adjective है, जबकि यहाँ adverb “strenuously” होना चाहिए।