Which language learning platform rebranded in 2019 with a name change that linguistically shifted from 'grammar focus' to 'conversational fluency' in its brand positioning?

Brand names and taglines often reveal fascinating linguistic strategies that companies use to position themselves in the market. From phonaesthetics (how words sound) to semantic associations, language plays a crucial role in how we perceive products. This poll tests your knowledge about a significant linguistic pivot in brand positioning that changed the trajectory of a major language learning platform.

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Babbel (from 'Babbelfish', referencing translation)
Lingvist (from 'GrammarTech', emphasizing technical grammar mastery)
Busuu (from 'VerbPro', highlighting verb conjugation expertise)
Memrise (from 'Memorphose', focusing on grammatical transformation to conversational practice)