Passage Summary: Certain areas have animals and plants that don't live anywhere else, and these areas are in danger. Since most extinctions happen when these unique species die out and we can't save everything, conservation groups should focus their efforts.

Reasoning: Hot spots contain species found nowhere else; these spots are at risk; most extinctions come from losing these unique species; conservation resources are finite.

Analysis: This stimulus sets up a clear prioritization problem. We are told that 'hot spots' are the primary source of unique species and that the loss of these species is the main driver of modern extinctions. Since resources are limited, the most logical path forward is to focus those resources where they will prevent the most extinctions. Look for an answer that suggests these organizations should prioritize the protection of these 'hot spots' over other types of habitats.