Which wildlife conservation organization pioneered the 'Symbolic Species Adoption' retail model that has since been widely replicated across the conservation sector?

In the competitive world of animal and wildlife conservation organizations, brand strategy plays a crucial role in connecting with donors and supporters. Major conservation brands must continually innovate to maintain relevance and impact. This trivia question focuses on a groundbreaking retail innovation from one of the world's leading wildlife conservation organizations that revolutionized how consumers engage with conservation efforts.

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

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