If a fixed amount of poweris to be transmitted over a certain length with fixed powerloss, then .....

the weight of the conductor required will be proportional to the voltage

the weight of the conductor required will be inversely proportional to the voltage and that of powerfactor of the load

the weight of the conductor required will be inversely proportional to the square of the voltage and that of powerfactor of the load

the weight of the conductorwill be proportional to the square of the voltage and directly proportional to the powerfactor of the load