Antarktika'daki buz çekirdekleri, geçmiş çağlardaki sera gazı oranlarını aydınlatmaktadır.

Answer and explanation

Correct answer: D. Ice cores from Antarctica elucidate atmospheric greenhouse gas levels from past epochs.

  1. Step 1: Subject: 'Antarktika'daki buz çekirdekleri' -> 'Ice cores from Antarctica'.
  2. Step 2: Verb: 'aydınlatmaktadır' -> 'elucidate'.
  3. Step 3: Object: 'geçmiş çağlardaki sera gazı oranlarını' -> 'atmospheric greenhouse gas levels from past epochs.'
Answer
Ice cores from Antarctica elucidate atmospheric greenhouse gas levels from past epochs.
Why not the others: 'Melt rapidly when concentrations reach lows' illogical relationship; 'Cannot be extracted reliably' contradicts the scientific capability; 'Remained unchanged' levels varied significantly.

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