Bunuel
Studies have shown that the number of times a car breaks down per year is significantly dependent on whether the owner conducts regular maintenance for the vehicle. Most customers who buy luxury cars are extremely particular about the maintenance of the cars. The owners of luxury cars who employ chauffeurs are more careful in the maintenance of their cars than the owners of economy cars are. Therefore, such luxury car owners will suffer fewer car breakdowns than the owners of economy cars.
Which of the following, if true, most strengthens the conclusion drawn above?
A. On average, luxury cars driven by chauffeurs have almost the same number of breakdowns that sports cars driven by car owners do.
B. Most chauffeurs employed by luxury car owners are trained to fix breakdowns.
C. Only luxury cars come with a special training program for the drivers of the cars, a program focused on the careful handling of these cars.
D. On average, the cost per breakdown in a luxury car is not higher than the cost per breakdown in an economy car.
E. Many luxury cars give the same mileage per unit of fuel that most economy cars do.
So the argument is that owners of luxury cars will have fewer car breakdowns than owners of economy cars because luxury car owners are more particular about maintenance, especially those who employ chauffeurs to drive their cars.
To make the argument stronger, we need to find something that directly supports the idea that luxury car owners are more careful with their car maintenance.
A. This answer doesn't really help, since it talks about the breakdown rate of luxury cars compared to sports cars, not economy cars.
B. Although it's nice that the chauffeurs can fix breakdowns, it doesn't really strengthen the argument that luxury car owners have fewer breakdowns.
C. This one's a winner! If only luxury cars come with special training programs for drivers focused on careful handling and maintenance, then it's reasonable to conclude that luxury car owners will be more careful and therefore have fewer breakdowns.
D. The cost of breakdowns doesn't really relate to whether owners are more or less careful with maintenance.
E. The fact that luxury cars get the same mileage per unit of fuel as economy cars doesn't really have anything to do with how careful owners are with maintenance.