evaluating an accident place

In evaluating an accident place, which one of the following is wrong?

1- The event marks the place sufficiently visible,

2- It does not allow the use of lighting or paging tools that may create sparks,

3- The first assessment is that all stimuli which are determined to be unresponsive to alcoholic beverages. 

4-  1+2

The right answer is: 3- The first assessment is that all stimuli which are determined to be unresponsive to alcoholic beverages.