Which language learning platform revolutionized its market position with the slogan "Language learning backed by science"?

The language learning market has seen explosive growth over the past decade, with numerous apps and platforms vying for dominance. Behind these successful language products are powerful marketing campaigns and slogans that have shaped how we think about language acquisition. This trivia question tests your knowledge of a particularly influential slogan that transformed how a major language learning brand positioned itself in the competitive market.

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Duolingo
Babbel
Rosetta Stone
Memrise