What factors contribute to the risk of LP-Gas ignition?

The correct answer highlights the critical factors that contribute to the risk of LP-Gas ignition. Concentration refers to the amount of gas present in the air, which, if within the flammable range, increases the risk of ignition. Heat serves as the necessary energy to raise the gas to its ignition temperature, while an ignition source, such as an open flame, electrical spark, or hot surface, is essential for initiating combustion.

Understanding these three components is crucial for ensuring safety when working with LP-Gas, as controlling them can prevent accidents. For instance, maintaining proper ventilation can help disperse gas concentrations, and eliminating potential ignition sources in areas where gas is being handled minimizes the risk.

The other options touch on environmental or equipment-related aspects, but they do not directly address the fundamental elements of combustion that lead to ignition.