The reaction of calcium with zinc carbonate (ZnCO3) to form calcium carbonate (CaCO3) and zinc can be represented by the following balanced equation:
Ca + ZnCO3 → CaCO3 + Zn
This equation shows that calcium reacts with zinc carbonate to produce calcium carbonate and zinc, which matches your description of the chemical process. Therefore, the correct representation is:
Ca + ZnCO3 → CaCO3 + Zn