Which major product pivot did Rosetta Stone make in 2013 based on customer feedback that fundamentally changed their business model?

Rosetta Stone has been a prominent name in language learning for decades. The company has undergone significant transformations based on customer feedback and market trends. This poll tests your knowledge of how this language learning giant evolved its brand and product offerings in response to changing consumer needs and technological advancements.

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Shifting from CD-ROM based software to subscription-based cloud services
Introducing AI-powered speech recognition technology
Expanding from language learning to mathematics and science education
Acquiring Duolingo and merging their platforms