Read this paragraph.

1. Zoos are needed to protect animals. 2. The Wildlife Conservation Society has worked hard to create more than one hundred protected habitats around the world for the rerelease of different species. 3. The National Zoo in Washington D. C. has bred Sumatran tigers, boosting a population that was once only seven hundred in the world. 4. An award-winning education department can be found at the Bronx Zoo. By educating children and adults, zoos can inspire people to learn about ecological and conservation efforts. 5. Zoos are crucial in saving endangered species where otherwise they may die from habitat loss or starvation. 6. Many zoos have breeding programs that allow species to multiply and thrive. 7. Seeing an animal in person can foster compassion more than simply watching a documentary.

Which sentence is part of the evidence in this paragraph?