Identify which is the wrong pair of conjunction.

he correct answer is Option 4). 'Hardly...when' is the correct pair of conjunction.Correlative conjunctions work in pairs to join words or phrases that have equal importance within a sentence. ​List of correlative conjunctions: either/or, both/and, whether/or, neither/nor, not only/but also, not/but, as/as, such/that, scarcely/when, as many/as, no sooner/than, rather/ than, hardly/when