Which of the following is true about latent heat?

Latent heat refers to the amount of heat absorbed or released by a substance during a phase change without changing its temperature. Common examples include the heat involved in melting ice into water or boiling water into steam. During these processes, although energy is being added or removed, the temperature remains constant until the phase change is complete. This distinct characteristic of latent heat is what makes the correct answer precise and accurate.

The other aspects mentioned in the choices do not align with the definition or properties of latent heat. For instance, it does not cause a temperature change; rather, it specifically facilitates transitions between states of matter (solid, liquid, gas) while maintaining the same temperature during those transitions. Additionally, latent heat is not strictly linked to heat loss nor is it confined solely to gaseous substances, as it is relevant in both liquid and solid states as well.