The correct answer is: A. running
The cost of running a vehicle increases with the distance traveled. This is because the vehicle uses more fuel, the tires wear down more quickly, and the brakes and other components need to be replaced more often.
Petrol is a major cost of running a vehicle. The price of petrol varies depending on the market, but it is generally a significant part of the total cost of running a vehicle.
The driver’s salary is also a cost of running a vehicle. The driver needs to be paid for their time and effort, and this cost is usually included in the overall cost of running a vehicle.
Tax is not a direct cost of running a vehicle. However, it is a cost that is incurred by the owner of the vehicle, and it can have an impact on the overall cost of running the vehicle.
In conclusion, the correct answer is: A. running.