Which advertising slogan revolutionized language learning product marketing by shifting focus from academic achievement to practical communication skills?

In the competitive world of language learning products, companies often employ innovative advertising slogans to capture market share. These linguistic hooks can become iconic representations of brand identity, sometimes revolutionizing how language acquisition products are marketed. This trivia tests your knowledge of breakthrough moments in language product advertising that transformed industry approaches to consumer engagement.

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"The Natural Way to Language Mastery" (Berlitz, 1980s)
"Don't Learn a Language, Live It" (Rosetta Stone, 2006)
"Fluency in 30 Days Guaranteed" (Pimsleur Method, 1990s)
"Your Second Language, Your Second Nature" (Duolingo, 2015)