Which advertising slogan holds the Guinness World Record for the longest-running campaign still in use today, having been consistently used since 1948?

World records aren't just about physical feats - they extend to the marketing world too! Some advertising slogans have achieved record-breaking recognition and longevity, transforming products into cultural icons. Test your knowledge about the most influential advertising slogans that have earned their place in the marketing history books and the Guinness World Records.

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• De Beers' "A Diamond is Forever"
• Nike's "Just Do It"
• Coca-Cola's "Open Happiness"
• McDonald's "I'm Lovin' It"

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