Which wildlife conservation marketing campaign was the first to use a symbolic animal adoption model, allowing supporters to 'adopt' an endangered animal in exchange for donations?

Conservation organizations have pioneered some of the most innovative marketing campaigns to raise awareness about endangered species and habitats. These campaigns have not only helped protect animals but have also revolutionized cause-related marketing. Test your knowledge about a groundbreaking wildlife conservation marketing initiative that changed how we approach environmental awareness.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

WWF's Adopt an Animal program (1973)
National Wildlife Federation's Wildlife Adoption Program (1985)
Defenders of Wildlife's Wolf Guardians (1990)
The Nature Conservancy's Species Sponsorship (1982)