Answer :

Final answer:

Copper is not a trace mineral among the options given; fluoride, chromium, and magnesium are trace minerals.


Explanation:

Copper is not a trace mineral among the given options. Trace minerals are essential micronutrients required by the body in small amounts for various physiological functions. While fluoride, chromium, and magnesium are all trace minerals, copper falls into the category of essential trace elements.


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