I just took a test in school today. What question was I asked?

Question I was asked: Which statement best explains why a car that is rolling on a level surface will eventually come to a stop?

I just took a test in school today. What question was I asked?

Question I was asked: During a lecture, a professor was talking about the potential that hydrogen has for exploding under certain conditions. Which was most likely the topic of the professor's lecture?

I just took a test in school today. What question was I asked?

Question I was asked:
Many houses are built on the sides of hills. Which of these actions would best prevent houses from sliding down hills after heavy rainfalls?