Which term refers to "marked" style in musical interpretation?

The term that refers to "marked" style in musical interpretation is "Marcato." This term is commonly used in music to indicate that a note or a series of notes should be played with a strong emphasis or accent. When a performer sees "Marcato," they understand that they need to articulation the notes distinctly and dynamically, making them stand out in the musical passage. This interpretation helps convey a sense of vigor and clarity.

The other terms have different meanings: "Leggero" indicates a light, effortless style; "Maestoso" suggests a majestic or stately manner of playing; and "Loco" refers to playing at the normal pitch or note without any octave shift. Each of these terms serves specific purposes in musical notation but does not convey the "marked" emphasis that "Marcato" does. This distinction is crucial for performing music with the intended emotional and stylistic expression.