My answer is: <span>C. At least two parallel groups of upright flowering branches used as line materials.</span>
The correct answer is <u>Cappella</u>
choral music music sung by a choir with two or more voices assigned to each part of the melody. The name of the musical form refers to vocal music “in the style of the chapel” without instrumental accompaniment. A cappella music was only rarely performed with instruments that duplicated the vocal line.
Hope this helps! :)
