Which twelfth-century composer at work in Paris is credited with, however rare, having written four-voice polyphony?

The mid-seventeenth-century operas of Cavalli and Cesti differ from those of Peri, Caccini, and Monteverdi in that they:

A) expand the choruses and instrumental interludes while reducing the number of arias B) reduce the choruses and instrumental interludes while increasing the number of arias C) heighten the differences between the recitative and aria styles D) reduce the choruses and instrumental interludes while increasing the number of arias, and heighten the differences between the recitative and aria styles

when a customer relies on a salespersons statements, purchases the product or service, and then finds that it fails to perform as promised, the supplier can be used for:

What will be an ideal response?