Passage Summary: The developer says we shouldn't save animals because they'll all die out eventually; the environmentalist mocks this by comparing it to refusing medical care just because everyone is mortal.

Conclusion: The land developer's logic for refusing to fund the preservation of endangered species is fundamentally flawed.

Reasoning: The environmentalist introduces a parallel scenario—refusing to treat cancer because all humans eventually die—to demonstrate that the eventual inevitability of an event does not justify a refusal to prevent it in the present.

Analysis: The environmentalist employs a classic 'reductio ad absurdum' strategy by applying the developer's underlying principle to a different context where it is clearly ridiculous. By showing that the logic 'if it ends eventually, don't bother saving it now' would lead to the absurd conclusion that we shouldn't treat terminal illnesses, the environmentalist undermines the developer's premise. When looking for the method of reasoning, focus on how the environmentalist uses an analogy to expose a flaw in the developer's general principle. It is a sharp, effective way to show that 'inevitable' does not mean 'unworthy of effort.'