Explanation
The correct answer is option 1 (secure the scene, turn off the engines of the crashed vehicles, and call the Fire Department). This question assesses First aid; this choice directly satisfies the conditions in the question and road-safety rules. The other choices broaden, narrow, or depart from the stated conditions, so they should not be selected. Under the current rule, the difficulty is 3 on a scale of 1 to 5.
Source
Reference not provided yet.