What musical instruction would "dying away" typically relate to?

The instruction "dying away" in music refers to a gradual decrease in volume, often indicated by terms such as "decrescendo" or "diminuendo." This direction implies that the performer should let the sound diminish softly, creating a gentle tapering off. This technique enhances the expressiveness of the music, often used at the end of a phrase or a piece to give it a poignant or reflective quality. Thus, the correct answer aligns perfectly with the common interpretation of "dying away," which is to call for a decrease in volume.