"If the forest continues to disappear at its present pace, the koala will approach extinction, " said the biologist. "So all that is needed to save the koala is to stop deforestation, " said the politician. Which one of the following statements is consistent with the biologist's claim but not with the politician's claim? ['Deforestation is stopped and the koala becomes extinct.', 'Reforestation begins and the koala survives.', 'Deforestation is slowed and the koala survives.', 'Deforestation continues and the koala becomes extinct.']