Living organisms require at least 27 elements of which 15 are metals. Among these, those required in major quantities include
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UPSC Civil Services preparation
- APotassium, Manganese, Molybdenum | Calcium
- BPotassium, Molybdenum, Copper | Calcium
- CPotassium, Sodium, Magnesium | CalciumCorrect
- DSodium, Magnesium, Copper | Manganese
Explanation
The correct option is C because it lists elements categorized as macronutrients or major elements required by living organisms.
In biological systems, elements like Potassium, Sodium, Magnesium, and Calcium are needed in relatively large amounts to maintain cellular functions, osmotic balance, and structural integrity.
The other options are incorrect because they include elements like Manganese, Molybdenum, and Copper. These are classified as micronutrients or trace elements, which are required by the body in very minute quantities. Therefore, Option C is the only group consisting entirely of major elements.
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