Correct option is B
Option (b) contains an error.
Explanation: The adverb
“swiftly” is incorrectly used with the verb “waited.” “Waiting” is typically a static or passive action and does not fit well with a fast-paced modifier like “swiftly.” A better adverb would be
“patiently” or
“quietly.”
Grammatical Rule Used:
✔ Adverbs of manner must suit the nature of the verb they modify.
Example: She patiently waited for the doctor.
✘ She swiftly waited – incorrect usage due to mismatch in action and manner.
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Information Booster:
Words like “run, walk, move” suit adverbs like
swiftly, not
wait.