Passage Summary: Some people think we are running out of trash space, but an ecologist argues they are wrong because they ignore the fact that we can open new landfills.

Conclusion: The prediction that a landfill crisis is inevitable is an unsound argument.

Reasoning: The prediction relies on the flawed assumption that no new landfills will be opened to replace the ones that are currently closing.

Analysis: The ecologist's main goal is to prove that the 'crisis' prediction is wrong. The statement about the crisis is the very thing the ecologist is attacking. In logical terms, this is the 'opposing claim' or the 'conclusion of the argument being refuted.' Look for an answer that identifies it as a position the author intends to discredit.