Choose the correct adverb to fill in the blank:
After studying __________ for several hours, she finally understood the complex mathematical concept.
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → diligently
An adverb is a word that tells how, when, where or how much something happens. It can also describe an adjective or another adverb, for example she sings sweetly, very hot.
Complete sentence: After studying diligently for several hours, she finally understood the complex mathematical concept. The blank tells how she studied, so it needs an adverb.
| Option | What it tells | Example |
|---|---|---|
| (1) lethargically | slowly and without energy: such study would not lead her to understand a hard idea | After the heavy lunch, the boys walked lethargically to class. |
| (2) invigorated | full of new energy: it is a verb form or an adjective, not an adverb, so it cannot describe “studying” | The morning walk left Papa invigorated. |
| (3) haphazardly | without any plan or order: careless study does not fit her final success | The books were piled haphazardly on the table. |
| (4) diligently (answer) | with care and steady hard work | Kavya worked diligently on her science project. |