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Consider the following minerals

1. Calcium
2. Iron
3. Sodium

Which of the minerals given above is/are required by human body for the contraction of muscles?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3



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All three minerals, calcium, iron, and sodium, play important roles in muscle contraction.

Calcium is essential for muscle contraction as it triggers the release of neurotransmitters that stimulate muscle fibers.

Iron is necessary for the production of hemoglobin, which carries oxygen to the muscles. Oxygen is required for muscle contraction.

Sodium is an electrolyte that helps in the transmission of nerve impulses, including those that initiate muscle contraction.


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