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?

Correct Option: 1, 2 and 3

Calcium ions (Ca2+) play a direct role in triggering muscle contraction via troponin-tropomyosin interaction, while sodium ions (Na+) are essential for generating and propagating nerve impulses that initiate contraction. Iron is a crucial component of myoglobin, the muscle protein responsible for storing oxygen needed for muscle activity and contraction.