Which CEO pioneered the 'comprehensible input' approach in their language-learning retail empire, transforming how millions learn new languages through natural acquisition rather than rote memorization?

The world of retail and language intersect in fascinating ways, with some companies revolutionizing how we communicate through their products and marketing strategies. This poll tests your knowledge about influential retailers who've made significant impacts on language learning and linguistic technologies. Can you identify the correct match between these language-focused retailers and their groundbreaking contributions?

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Stephen Kaufmann of LingQ, who developed the first major immersive reading platform with integrated dictionaries and AI voice generation
Luis von Ahn of Duolingo, who implemented gamification and microlearning to make language acquisition addictive and accessible to global audiences
Paul Daugherty of Rosetta Stone, who championed the visual-association method that eliminated translation in the learning process
Gabriel Wyner of Fluent Forever, who pioneered spaced repetition systems integrated with personalized flashcards for vocabulary retention