Which of the following represents a genuine milestone in National Geographic's brand evolution?

National Geographic, one of the world's most recognizable geography brands, has evolved significantly since its founding in 1888. This poll tests your knowledge of National Geographic's iconic visual identity and how it has adapted to remain relevant in the digital age while maintaining its commitment to exploration, science, and conservation. Can you identify the correct milestone in National Geographic's brand journey?

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The famous yellow border was first added to National Geographic magazine in 1910 as a practical solution to protect the magazine edges during postal delivery.
National Geographic's logo changed from yellow to blue in 2001 to reflect the brand's increased focus on ocean exploration and conservation.
The brand shortened its name to 'NatGeo' officially in 1997, anticipating the need for more compact branding in digital spaces.
The iconic National Geographic photography contest was launched in 2005 as a direct response to the rise of digital photography and social media sharing.