Question

what is a cantus firmus?(1 point)the main melody of a chansona type of medieval instrumentthe main melody of a massa type of dance

Explanation:

A cantus firmus is a pre-existing fixed melody, often a plainchant, used as the foundational main melody in polyphonic masses during the medieval and Renaissance eras. The other options are incorrect: chansons are secular songs and not the primary context for cantus firmus, it is not an instrument, and it has no connection to dance.

Answer:

the main melody of a mass