The correct answer is B. Having your own car.
Step-by-step explanation
There are different options to save money on transportation, for example, you can take the bus or use the public system of transportation because these are quite cheap and accessible for almost everyone; another of the cheapest methods of transport is going by bicycle, this costs almost nothing except the bike and its maintenance. Also, you can avoid paying for transportation if you move nearby campus or work because in this way you can walk. On the other hand, you can have your own car, but this is not going to mean saving money because you have to pay for the car, then pay taxes every year, pay for gas, keep your engine in perfect condition by going to the mechanic, and even pay for a parking lot. According to the above, having your own car is not a way to save money on transportation. So, the correct answer is B. Having your own car.