your answer would be “separated choirs”
this is because the venetian polychoral style was a type of music from the late renaissance which involved spatially separate choirs singing in alternation, this represented a major shift from the prevailing polyphonic writing of the renaissance and was one of the major developments which led directly to the formation of what is now known as the baroque style. the more common term for this is “cori spezzati” which means seperated choirs
hope this helps :)
