Which of the following is an example of a macro mineral?

Potassium is classified as a macro mineral, as it is needed by the body in larger amounts compared to trace minerals. Macro minerals are essential nutrients that play vital roles in maintaining various bodily functions, including fluid balance, nerve function, and muscle contraction. Potassium, in particular, is crucial for maintaining normal heart rhythm, supporting overall cellular function, and managing blood pressure.

In contrast, iron and copper are considered trace minerals, which are required in smaller quantities but are still essential for health. Iron is important for hemoglobin production and oxygen transport in the blood, while copper plays a role in iron metabolism and the formation of connective tissue. Iodine, while also important, is classified as a trace mineral as it is needed in microgram amounts for thyroid hormone production.

The distinction between macro and trace minerals lies in the quantities required by the body. Potassium's designation as a macro mineral underscores its importance in our diet and health, emphasizing the need to consume adequate amounts through food sources such as fruits, vegetables, and legumes.