Which of the following mineral salts is a trace element?

The mineral salt that is a trace element is Zinc. Trace elements are minerals that are needed by the body in small amounts to carry out essential functions. Zinc is an important trace element that plays a vital role in many biological processes, such as immune function, wound healing, and protein synthesis. Carbon, hydrogen, and calcium are not trace elements because they are needed in much larger amounts by the body and are not considered to be trace elements. Carbon and hydrogen are the building blocks of all living things, while calcium is an essential mineral that is required for strong bones and teeth, among other functions. Potassium is not a trace element either, but it is an essential mineral that helps to regulate fluid balance in the body and supports proper muscle and nerve function.