Passage Summary: A government official believes that because trees soak up carbon dioxide, planting a lot of them is a practical way to hit their environmental targets.

Conclusion: Planting many trees will assist the country in meeting its goal to reduce carbon dioxide emissions.

Reasoning: The country is committed to lowering carbon dioxide levels, and trees are known to absorb this specific gas from the atmosphere.

Analysis: To weaken this argument, we need to find a reason why planting trees might not actually lead to a net reduction in carbon dioxide. Perhaps the process of clearing land to plant these trees releases more carbon than the trees eventually absorb, or maybe the specific trees chosen are short-lived. Look for an answer that suggests a hidden environmental cost or a biological limitation that offsets the absorption benefit.