Explanation:

Electroplating is a process in which a metal object is coated with a layer of another metal using electricity. The metal object on which electroplating is to be done is called the cathode.

The cathode is the correct answer.

Reason:

1. In electroplating, the metal object to be plated is connected to the negative terminal of the power supply. This is done to ensure that the metal object attracts the positively charged metal ions from the electrolyte solution.

2. The cathode is the electrode where reduction occurs. Reduction is the process of gaining electrons, and in electroplating, it is the process of depositing a layer of metal onto the object.

3. The anode, on the other hand, is connected to the positive terminal of the power supply. It is the electrode where oxidation occurs. Oxidation is the process of losing electrons, and in electroplating, it is the process of metal ions dissolving from the anode into the electrolyte solution.

4. The electrolyte solution contains metal ions of the metal to be plated. These metal ions are attracted to the cathode (the metal object) and are reduced to form a layer of metal on its surface.

5. The solution acts as a medium for the transfer of metal ions between the anode and the cathode.

6. Therefore, the metal object on which electroplating is to be done should be the cathode, as it is the electrode where reduction occurs and the metal ions are deposited.

In summary, during electroplating, the metal object on which electroplating is to be done should be the cathode.

Because at the cathode, the dissolved metal ions in the electrolyte solution are reduced at the interface between the solution and the cathode, such that they "plate out" onto the cathode.The reduction process in the electroplating occurs on the cathode ,that's why the metal on which electroplating is to be done should be cathode.