Which mineral is essential for the maintenance of strong bones and teeth, and also plays a role in the regulation of muscle contractions?

A Phosphorus
B Calcium ✓
C Magnesium
D Potassium

Explanation

Calcium is a mineral that is essential for the development and maintenance of strong bones and teeth, and also plays a crucial role in the regulation of muscle contractions.

Source

National Institutes of Health, Office of Dietary Supplements
Minerals and Trace Elements Nutrition and Biochemistry Calcium Easy MEDICAL Confidence: high