Explanation:

The resistance of a cell does not depend on the emf of the cell. This can be explained by the following points:

1. Definition of resistance: Resistance is the opposition offered by a material or a device to the flow of electric current through it.

2. Factors affecting resistance: The resistance of a material or device depends on various factors such as length, area of cross-section, temperature, and material. However, the emf of the cell is not a factor affecting resistance.

3. Definition of emf: EMF stands for Electromotive Force. It is the energy per unit charge that is supplied by a source of electric current such as a battery or a generator.

4. Relationship between emf and resistance: The emf of a cell is not directly related to its resistance. It only indicates the potential difference that can be developed across the terminals of the cell. The resistance of a cell is determined by the internal resistance of the cell and the resistance of the external circuit.

5. Internal resistance of a cell: The internal resistance of a cell is the resistance offered by the electrolyte and electrodes of the cell. It depends on the concentration of the electrolyte and the temperature of the cell.

6. Resistance of the external circuit: The resistance of the external circuit depends on the type of material used in the circuit, the length of the wire, and the cross-sectional area of the wire.

Conclusion:

In conclusion, the resistance of a cell does not depend on the emf of the cell. It is determined by the internal resistance of the cell and the resistance of the external circuit. The emf of the cell only indicates the potential difference that can be developed across the terminals of the cell.

The internal resistance of a cell does not depend on the emf of the cell because emf is the very source of voltage, either chemical or inductive, an can be measured at open circuit only. so, external resistance have no effect of emf. Hence, option d is correct.