Answer:
an organum is a form of early polyphony based on an existing plainsong.
a polyphony is the style of simultaneously combining a number of parts, each forming an individual melody and harmonizing with each other.
a gregorian chant is church music sung as a single vocal line in free rhythm and a restricted scale (plainsong), in a style developed for the medieval Latin liturgy.
Explanation:
All of them except katrina helps her brother who is six years old with his homework is essential
The answer would be <span>A. writing that uses humor to poke fun at human weaknesses</span>
