What happened immediately before the car was lifted off the ground?
a) the debris flew through the air.
b) the traffic light stopped working.
c) the writer heard a sound like a train.
d) the sky displayed a peculiar coloring.

Personally, I think it was the debris flew through the air.

Logically, it would  be:

1. D
2. B
3. C
4. A

And then the accident happened. Also in the text, that was the way it was ordered as well, so I would assume it was the debris flew through the air.

Would the answer be a riot?