Consider the following elements 1 Cobalt 2 Phosphorus 3 Zinc Which...

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Consider the following elements.
1. Cobalt
2. Phosphorus
3. Zinc
Which of the above elements are required for maintaining the healthy human body?

A. 1 and 2

B. 2 and 3

C. 1 and 3

D. 1, 2 and 3

Answer: Option D

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