Select the CORRECT sentence that uses a conjunction to connect two clauses with different tenses, maintaining coherence and clarity:

'By the time we arrived, they had already left the party' joins a simple-past clause (we arrived) and a past-perfect clause (they had already left) with the conjunction "by the time"; the past perfect correctly marks the earlier action. The 'has finished... has started' sentence uses the same tense (present perfect) in both parts, the 'Despite finishing her work early' sentence uses the preposition "despite" with a single clause and an illogical present tense, and the 'While she cooked dinner' sentence mixes past and future incoherently.