Answer:
a and c
Monody, Homophony
Step-by-step explanation:
The musical style of the time of the Baroque movement brought some variations, among them the Monody, which consists in establishing the continuous bass lines and the acute melody in the music and the intermediate parts; Homophony, which is singing with a variation in voice; the most dramatic lines as in opera; harmonization between vocals and instruments, as in cantatas.