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Which of the following metals is the most essential in the regulation of blood volume, ...

Which of the following metals is the most essential in the regulation of blood volume, blood pressure and osmotic equilibrium?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Zinc
  • B Manganese
  • C Sodium
  • D Iron
Correct Answer: Option C
Explanation:

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