Final answer:
Pouring water on a gas spill is not recommended due to the potential environmental contamination, hazard, and violation of city codes. The correct answer is option 4) All of the above.
Step-by-step explanation:
When it comes to a gas spill, pouring water on it is not recommended because it can have several negative consequences. Firstly, it may enter a storm drain, sewer line, or waterway, resulting in environmental contamination. Additionally, it can create an environmental hazard and violate city codes. Therefore, the correct answer is option 4) All of the above.