The correct answer is: B. Ferranti effect.
The Ferranti effect is the phenomenon of rise in voltage at the receiving end of an open-circuited or lightly loaded line. This is due to the inductive reactance of the line, which causes the current to lag behind the voltage. This lagging current causes a voltage drop in the line, which is greater at the receiving end than at the sending end. This voltage drop, combined with the sending-end voltage, results in a higher voltage at the receiving end.
The Seebeck effect is the production of an electric potential difference (voltage) across an electrical conductor when two different materials are joined together and there is a temperature difference across the junction.
The Raman effect is the inelastic scattering of light by a substance, resulting in a change in the frequency of the light.
None of the above options are correct.