All alternatives are significant, but if the person is in doubt between renting or buying, it means that the analysis should be budget, which means that alternatives 1, 3 and 4.
Anyway, of course, the first question is how much the consumer has and how much he is willing to spend. The cost of buying a car is high, so if the consumer does not want to spend a lot, the rental option will be better, unless the mileage exceeds what is allowed for the rental.
The time of use of the car and mileage analysis are extremely significant, but it is a cost-benefit analysis. If the consumer is to use the car for a long time, the mileage allowed by the rent can be exceeded and the car rental becomes very expensive, which suggests that buying would be the best option. If the consumer needs the car for a time course of use, the option of renting will probably be better, since owning a car generates extra expenses such as insurance and paperwork.