Answer:
A. with the meetings of the Florentine Camerata
Explanation:
Florentine Camerata was a music and drama group in the 16th century Renaissance Florence . The members included: the theorist Vincenzo Galilei (father of Galileo) and the composer Giulio Caccini. Bardi collaborated with them and other Florentine musicians in court entertainments from 1579 to 1608.
Florence and the Florentine Camerata are famous for the formulation of opera in the realm of music. They developed the stile recitativo which facilitated the development of dramatic music and the opera.