Correct option is C
The correct substitution of the highlighted words is (c)
when.
Explanation:
· The correct correlative pair is “
Hardly…when” – used for immediate succession of two events.
· "Hardly had she heard the news
when she began to weep."
·
Grammatical Rule Used:
· Hardly/scarcely is followed by
"when" and not
"after" in formal constructions for past perfect and past simple tense sequences.
·
Example:
· Hardly had I reached the station
when the train departed.
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Exception Note:
Avoid using “than” with “hardly”; it is incorrect.
Let’s now review the other options:
·
(a) than – Used for comparison, not time. ❌
·
(b) well – Not grammatically linked with "hardly." ❌
·
(d) while – Indicates duration, not sudden succession. ❌