Which definition best describes 'obsolete'?

• A. Outdated or old-fashioned
• B. No longer in use
• C. Antiquated
• D. Modern

Answer: (C)

Obsolete is about something that has fallen out of use because newer options have replaced it. Antiquated fits best because it conveys being old-fashioned and out of date in a way that implies it’s no longer suitable or in practical use. It carries that stronger sense of obsolescence triggered by progress, beyond just being old. The idea of being merely old or out of date sounds similar, but that phrasing focuses more on appearance or timeliness rather than actual nonuse; saying something is no longer in use states the fact directly but doesn’t capture the broader sense of being rendered obsolete by newer methods. The opposite option clearly does not describe obsolescence.