What is the function of magnesium in the body?

Magnesium plays a crucial role in the body, primarily by being involved in over 300 biochemical reactions, which encompass a wide array of physiological processes. It is essential for muscle contraction and relaxation, nerve transmission, and energy production. For instance, magnesium is a cofactor in the conversion of adenosine triphosphate (ATP) to adenosine diphosphate (ADP), which is vital for muscle function and energy metabolism.

Furthermore, magnesium contributes to the synthesis of proteins and DNA, and it helps maintain normal muscle and nerve function. It also plays a part in regulating blood pressure and blood glucose levels. Given its extensive participation in muscle function and numerous other biochemical pathways, option B accurately reflects the wide-ranging impact magnesium has within the body.