If there is an active gas leak, what is one critical factor to remember about natural gas?

Natural gas is primarily composed of methane, which is indeed lighter than air. This characteristic is critical in understanding how natural gas behaves in the event of a leak. If a gas leak occurs, the methane can rise and accumulate in confined spaces, displacing oxygen. This displacement of oxygen can create a hazardous situation, as it can lead to asphyxiation for anyone in the area if the concentration of oxygen decreases significantly. Recognizing this behavior of natural gas is crucial for maintaining safety during gas leak incidents, as it dictates the necessary precautions and response strategies.

In comparison, the other options each contain inaccuracies about the properties of natural gas. It's important to recognize these distinctions to ensure safety and proper response protocols during a gas leak situation.