CACOPHONOUS:

A. Loud

B. Melodious

C. Sonorous

D. Harsh

Answer: Option B

Solution(By Examveda Team)

Loud: Producing much sound.
Sonorous: making a deep or ringing sound.
Harsh: Unpleasantly rough or jarring.
Melodious: Sweet or loving sounds.
CACOPHONOUS: producing a harsh, discordant mixture of sounds

Antonym of CACOPHONOUS is Melodious.