What of these will you be least likely to find in medieval music?

In medieval music, you are least likely to find complex harmonies and polyphonic structures that became prevalent in later periods, such as the Renaissance. Instead, medieval music primarily featured monophonic textures, often consisting of a single melodic line, with limited use of instrumental accompaniment. Additionally, the use of equal temperament tuning, which allows for more intricate harmonic relationships, was not developed until later.