What is the primary role of Vitamin K2?

Vitamin K2 plays a critical role in promoting bone health and is essential for proper blood clotting. This vitamin assists in the regulation of calcium in the bones and bloodstream. It activates proteins that are crucial for the binding of calcium to the bone matrix, thus enhancing bone density and strength. Moreover, Vitamin K2 is vital for the modification of certain proteins that are necessary for blood coagulation. Without adequate Vitamin K2, individuals may have an increased risk of fractures and bleeding disorders due to impaired clotting.

The other choices, while they relate to various health aspects, do not encapsulate the primary functions of Vitamin K2. For instance, muscle growth and eye health are not direct outcomes of Vitamin K2's function, nor is immune function primarily supported by this vitamin. Instead, Vitamin K2's most significant contributions lie in ensuring healthy bones and effective blood coagulation.