Final answer:
Composers Monteverdi, Purcell, Corelli, and Lully were active during the early Baroque period and contributed to the development of Baroque music styles and forms. Option c is correct.
Step-by-step explanation:
The composers active during the early Baroque period, which spans from the late 16th century to the early 18th century, are option c: Monteverdi, Purcell, Corelli, and Lully. These composers were influential in the development of new styles and forms of music that characterized the Baroque era.
Claudio Monteverdi is known for his significant contributions to opera, and his work marks the transition from Renaissance to Baroque music. Henry Purcell was a key English composer who incorporated Baroque elements in his compositions.
Arcangelo Corelli influenced the development of violin technique and Baroque sonata form, while Jean-Baptiste Lully played a crucial role in French opera and the stylization of French Baroque music.