Which of these famous brand slogans holds the Guinness World Record for the longest continuously used slogan in advertising history?

Brand slogans have the power to define companies and enter our collective consciousness. Some have been so successful they've set world records for longevity, recognition, or impact. This trivia tests your knowledge of record-breaking marketing taglines that changed advertising history. Can you identify which famous slogan holds a Guinness World Record for its extraordinary success?

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De Beers' 'A Diamond is Forever' (1948)
Nike's 'Just Do It' (1988)
Coca-Cola's 'The Pause That Refreshes' (1929)
Maxwell House's 'Good to the Last Drop' (1915)