The correct answer is: [C]: "more common" .
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"Drug abuse is <u> more common </u><u /> among college students than among their contemporaries who are not in college."
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Answer: Continuous Innovation
Explanation:
Continuous Innovation refers to the making of New products that are modifications of existing products that require NO CHANGE in the way the product was used in the past.
In other words, NO NEW user learning is required.
Examples include line extensions and improved products such as the iPhone 6+.
I want to say A . Hope this helps :)