As animal rights activists and scientists draw increasing attention to the health and ethical implications of keeping wild animals in captivity, there has been considerable debate about the future of zoos. While some commentators argue that zoos should be abolished, others maintain that zoos will continue to have an important role to play in education, conservation, and research. Carefully read Sources A through D (listed below), including the introductory information for each source. Compose a thesis statement you might use for an essay in which you develop your position on the role, if any, that zoos should serve in the future. Then, select at least three pieces of evidence from the sources to support your position, briefly explaining how each piece of evidence might be used to develop your argument. Avoid merely summarizing the sources.

Source A (PETA)
Source B (Clay)
Source C (Worland)
Source D (chart)