Which statement is TRUE regarding military jet fuel?

The statement that civilian aviation fuel has a significantly lower flash point is accurate because it highlights an important distinction between military and civilian fuel types. General aviation fuels, such as Jet A, typically exhibit a lower flash point compared to military jet fuels, like JP-5, which is designed for use on aircraft carriers and has a higher flash point. This means that civilian fuels are more flammable under lower-temperature conditions, impacting safety protocols for handling, storage, and transportation.

In the context of fuel handling, understanding flash points is crucial for ensuring the safety of operations. A higher flash point means that fuel is less likely to ignite at lower temperatures, making military fuels somewhat safer in environments where temperature management may be challenging.

Looking at the other statements, they convey inaccurate information about the safety and characteristics of different fuel types. For instance, hypergolic mixtures, while they may ignite spontaneously, require careful handling due to their toxic properties. Additionally, ingesting any form of jet fuel poses significant health hazards, as it contains harmful chemicals that can cause serious health issues. Therefore, the emphasis on the relative flash points clearly establishes why the correct answer reflects a key understanding of fuel safety in aviation contexts.