What is a characteristic of a cryogenic fluid?

A cryogenic fluid is characterized by having a low boiling point, specifically below -130 °F (-90 °C). This property is essential as it defines the temperature range in which such fluids exist in a liquid state. Common cryogenic fluids include liquid nitrogen and liquid helium, which remain in liquid form at very low temperatures and are utilized in various applications including medical uses, cryopreservation, and superconductivity.

The other options do not accurately describe cryogenic fluids. A high boiling point is contrary to the definition of a cryogenic fluid, as they must have low boiling points to maintain their liquid state at extremely low temperatures. Cryogenic fluids are not always gaseous at room temperature; many exist as liquids until they reach their boiling points at typical ambient temperatures. Lastly, the primary applications of cryogenic fluids are often related to cooling and not heating, which misrepresents their functional purpose in scientific and industrial contexts.