Which term indicates performing music in a well-marked manner?

The term that indicates performing music in a well-marked manner is "bene." This Italian term translates to "well" or "good" in English and is often used in musical contexts to instruct the musician to play accurately and clearly, adhering to the intended markings and expressions within the score.

The other terms, while they have their own meanings, do not specifically convey the idea of well-marked performance. "Con grazia" translates to "with grace," suggesting a delicate or graceful interpretation, while "con espressione" means "with expression," indicating that the musician should inject emotion into their performance rather than focusing solely on precision. "Ben" is a shortened form or an incomplete word that does not function effectively as a musical directive. This context helps clarify why "bene" is the correct choice for indicating a well-marked manner of performance.