The word "cacophony" refers to a harsh, discordant mixture of sounds. Here's a quick breakdown of the options: Colophony - This is a resin obtained from pine trees and is unrelated to sound. Symphony - This term represents a harmonious, well-arranged composition of sounds, often used to describe music that is pleasant and organized. Polyphony - This refers to a musical texture involving multiple independent melody lines, not necessarily contrary to cacophony. Antiphony - This means a call and response style in musical or choral contexts, again not an opposite to cacophony. Since "symphony" signifies harmony, which is the opposite of the disorder and harshness of a cacophony, the correct answer is: Symphony