The correct answer to the question is option 1, which states that all the statements I, II, III, and IV are true.

To understand why option 1 is correct, let`s examine each statement individually:

I. It is usually a lead-acid battery: This statement is true. Most commonly used automobile batteries are lead-acid batteries, which consist of lead plates and sulfuric acid.

II. It has six cells with a potential of 2 volts each: This statement is not entirely accurate. While automobile batteries do have multiple cells, the potential of each cell is around 2.1 volts, not 2 volts exactly. However, since the statement says "with a potential of 2 volts each," we can consider it to be true.

III. Its cells work as Galvanic Cells while discharging power: This statement is true. Galvanic cells are electrochemical cells that convert chemical energy into electrical energy, which is what happens when an automobile battery is discharging power.

IV. Its cells work as electrolytic cells while recharging: This statement is true. During the recharging process, the automobile battery acts as an electrolytic cell. In this process, electrical energy is converted into chemical energy by reversing the chemical reactions that occur