Vitamins, and minerals such as iron, calcium, are another group of essential nutrients, th

Vitamins, and minerals such as iron, calcium, are another group of essential nutrients, though the body does not need ______ it does the macronutrients.

A．as great a quantity of these as

B．as a great quantity of these as

C．as great a quantity of these than

D．so a great quantity of these as

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