Which 1929 marketing campaign is often credited as the first modern product launch to use psychological research and is considered a turning point in advertising history?

In the annals of marketing history, certain innovations forever changed how products were advertised and consumed. The early 20th century witnessed a transformation in advertising methodologies that laid the groundwork for today's sophisticated marketing landscape. This trivia challenges your knowledge about a pivotal moment in advertising history that revolutionized how products were presented to the public and fundamentally changed consumer behavior across America and eventually the world.

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Edward Bernays' 'Torches of Freedom' campaign for Lucky Strike cigarettes
Bruce Barton's 'The Man Nobody Knows' campaign for General Motors
Claude Hopkins' 'Scientific Advertising' campaign for Palmolive soap
Albert Lasker's 'Radio Direct' campaign for Sunkist oranges