Correct Answer: Symphony

Solution : The correct choice is the third option .

Cacophony refers to harsh, discordant sounds, while symphony represents harmonious, melodious music.

The meanings of other options are as follows:

• Colophony : This refers to a type of resin obtained from pine trees. It is commonly used in products like varnishes, adhesives, and, in some cases, violin bow rosin.
• Polyphony : This is a musical style or technique where multiple independent melodic lines or voices occur simultaneously, creating harmonies.
• Antiphony : It refers to a style of music or performance in which two distinct groups of singers or instruments alternate in a call-and-response fashion.