D. None of the above, wouldn’t say any of these are a good answer because they don’t correlate to the question.
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The answer is: An informal idiom
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Mark things with different color means of identification it's used to convey information quickly.
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Neuroscience and Psychology. The scientific study of the brain is indispensable to the scientific study of the mind. Although neuroscience and psychology focus on different domains, neuroscience deals with the realm of physical properties, while psychology deals with the more abstract realm of the mental.
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c is a device that is the following link for