Passage Summary: Zoos used to be bad for wild animal populations because they took animals from the wild. Now, they mostly breed their own animals, which actually helps save endangered species by letting them be released back into nature.

Reasoning: While early zoos depleted wild populations, modern zoos primarily use captive breeding programs, which now allow for the potential reintroduction of endangered species into the wild.

Analysis: Since this is a Most Strongly Supported question, we must treat the premises as facts and see what they imply when combined. The shift from 'taking' to 'breeding' is the core transition described. The information suggests that modern zoo practices are significantly less harmful to wild populations than historical practices were. We should look for an answer that synthesizes the idea that captive breeding has transformed the role of zoos from population depleters to potential population restorers.