the road conditions and type of tires the type of engine and the amount of gas used by the engine the car length and distance traveled the distance travel
I gave my students this multiple choice question: What information is needed to calculate the speed of a car?

Only one answer is correct among these 4 choices:
- the road conditions and type of tires
- the type of engine and the amount of gas used by the engine
- the car length and distance traveled
- the distance travel

Could you tell me which one is correct?

the distance travel