Official Solution:
Tests conducted by the National Automobile Association of India (NAAI) have revealed that the vacuum brakes installed on Nano mini-cars perform better than any brake installed on any other mini-car in each of the test scenarios. Given this performance, any consumer who is purchasing a mini-car following the safety recommendation of the NAAI should purchase a Nano
Which one of the following statements, if true, most weakens the argument?
A. Mini-cars are less safe than some other types of automobiles.
B. Most consumers purchase cars based on multiple criteria in addition to safety.
C. The test scenarios used by the NAAI for evaluating the brakes are not commonly encountered in typical city driving conditions.
D. The vacuum brakes installed on Nano mini-cars are costlier to maintain than those on other mini-cars.
E. Some other mini-cars have achieved better frontal-collision safety ratings than the Nano mini-cars.
A. Mini-cars are less safe than some other types of automobiles.
This option does not directly weaken the argument about the Nano mini-car's safety relative to other mini-cars. It compares mini-cars to other types of automobiles, not within the category of mini-cars themselves.
B. Most consumers purchase cars based on multiple criteria in addition to safety.
While this statement is true, it does not directly weaken the argument that those focused solely on safety should choose the Nano based on the NAAI's findings. It addresses a broader buying behavior but does not challenge the safety assertion.
C. The test scenarios used by the NAAI for evaluating the brakes are not commonly encountered in typical city driving conditions.
Since the recommendation is based solely on the NAAI tests. If a consumer is specifically prioritizing the results of these tests, it doesn’t matter if some scenarios are rare in real life because the recommendation is still grounded in the NAAI results themselves.
D. The vacuum brakes installed on Nano mini-cars are costlier to maintain than those on other mini-cars.
This statement discusses maintenance cost, which is unrelated to the immediate safety performance of the brakes. While it might affect consumer choice, it doesn't directly weaken the argument regarding safety.
E. Some other mini-cars have achieved better frontal-collision safety ratings than the Nano mini-cars.
This option weakens the argument by indicating that other mini-cars might be safer in aspects other than braking performance, suggesting that Nano might not be the best choice for overall safety. This directly challenges the conclusion that based on safety, the Nano is the best choice.
Answer: E