Final answer:
The choral music of an opera tends to be homophonic because it emphasizes a single melody line with accompanying harmonies.
Step-by-step explanation:
The choral music of an opera tends to be homophonic because it emphasizes a single melody line with accompanying harmonies. In homophonic music, the voices or instruments move together in the same rhythm, creating a unified sound. This style allows the audience to easily follow the main melody and lyrics, enhancing the storytelling aspect of opera.