This question focuses on vocabulary, specifically identifying synonyms. 'Innovative' describes something that is new, original, and introduces new ideas or methods. 'Traditional' is opposite in meaning. 'Outdated' also has an opposite meaning. 'Common' means existing in multiple instances and is not related to innovation. * **Core Concept:** Synonym identification * **Solution:** The best synonym for 'innovative' is 'original' as it conveys the aspect of being new and creative. Options A, B, and D are not close in meaning. * **Detailed Analysis:** * **A:** 'Traditional' refers to established customs and is opposite in meaning to 'innovative'. * **B:** 'Outdated' means old and no longer in use; opposite to 'innovative'. * **C:** Correct. 'Original' and 'innovative' both imply something new and creative. * **D:** 'Common' means something ordinary and frequent, therefore it is unrelated to innovation. * **Common Mistake:** Choosing option A, B or D because of a misunderstanding of the word or being overly literal about the synonyms.