Section: Logical Reasoning

25) Tom is test driving a blue car. After driving for a short while he comes to the following conclusion: Since this car is blue, it must not accelerate quickly.

The foregoing conclusion can be properly drawn if it is also known that

1. all red cars accelerate quickly
2. there are some slow blue cars
3. all blue cars may not accelerate slowly
4. all cars that accelerate quickly are red
5. all slow cars are red

The given statement tells us only that the car is blue. For us to be assured that it is slow we must know either that every blue car is slow or that no blue car accelerates quickly. (D) restricts quick acceleration to red cars.