Unresolved dissonance is a characteristic of:

Dissonance is the unstable tone combination. While consonance is the stable one. The dissonance i s tension and does not belong in the domain of harmony. When the tension is unresolved, we have unresolved dissonance.

Unresolved dissonance is a characteristic of the baroque music.

The general characteristics of Baroque music is movement, energy, and tension.

With its treble character, the violin became the queen of the instruments in the baroque music.