Which wildlife conservation marketing campaign first used the now-ubiquitous adoption model, where donors could 'adopt' an endangered animal in exchange for regular updates?

Conservation organizations use powerful marketing campaigns to raise awareness about endangered species and habitat protection. These campaigns have transformed how the public perceives wildlife conservation efforts and have led to significant funding and policy changes. Test your knowledge about one of the most successful wildlife marketing initiatives that changed the conservation landscape!

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

WWF's 'Adopt an Animal' program (1973)
Greenpeace's 'Save the Whales' campaign (1975)
National Wildlife Federation's 'Wildlife Adoption Center' (1980)
The Nature Conservancy's 'Guardian Species' initiative (1968)