An accident involving only one vehicle whose possible causes are unknown is called:

1. a mysterious collisionCorrect answer!
2. a collision at a railroad crossing
3. a collision with animals
4. a pedestrian collision

Explanation

The correct answer is option 1 (a mysterious collision). This question assesses Defensive driving; this alternative directly meets the conditions in the prompt and the road-safety rules. The other alternatives broaden, narrow, or depart from the stated conditions and therefore should not be selected. Under the current rule, the difficulty is 3 on a scale from 1 to 5.

Source

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