Which digital marketing campaign by a wildlife conservation organization first reached 1 billion social media impressions in a single week, creating a new benchmark for conservation fundraising?

Test your knowledge about groundbreaking digital marketing campaigns that have revolutionized wildlife conservation efforts. These campaigns have not only raised awareness but also generated substantial funding for endangered species protection and habitat preservation. See if you can identify which famous campaign sparked a global movement that changed how conservation organizations approach digital fundraising and public engagement.

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WWF's 'Last Selfie' Snapchat campaign featuring disappearing endangered species
WildAid's 'When the Buying Stops, the Killing Can Too' featuring celebrity ambassadors
National Geographic's #SaveTogether interactive donation matching challenge
Conservation International's 'Nature Is Speaking' celebrity-voiced PSA series