Which government advertising campaign was the first to use behavioral economics principles to dramatically increase organ donor registrations?

Throughout history, governments have launched numerous public campaigns to promote policies, influence behavior, or address societal challenges. These campaigns often employ sophisticated marketing strategies borrowed from the retail sector. This trivia tests your knowledge about a groundbreaking government advertising campaign that revolutionized public health messaging and became a model for future government communications worldwide.

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The UK's 2013 'Nudge Unit' campaign that made organ donation an opt-out rather than opt-in choice on driver's license applications
The US 'Donate Life' campaign featuring celebrity endorsements and emotional storytelling
Australia's 'DonateLife Week' that offered tax incentives for registered organ donors
Singapore's 'Gift of Life' campaign that implemented a lottery system for registered donors