Which wildlife conservation organization first introduced the 'adoption' model where donors could symbolically adopt endangered animals as a fundraising strategy?

Test your knowledge about major conservation brands that have made significant impacts in animal protection and wildlife conservation! These organizations have shaped how we approach wildlife preservation and have built their brand positioning around specific conservation missions. Do you know which organization pioneered which conservation approach?

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World Wildlife Fund (WWF)
The Nature Conservancy
National Audubon Society
Conservation International