Final answer:
The music of 'Gaude Maria Virgo' features polyphonic textures, a characteristic of the high medieval to early Renaissance periods, but it is not a Baroque choral composition, nor is it composed by Bach or influenced by rock and roll rhythms.
Step-by-step explanation:
Gaude Maria Virgo is not a Baroque choral composition, nor was it composed by Johann Sebastian Bach, which excludes options A and B from accurately describing the piece. It cannot be influenced by rock and roll rhythms, as this is a much later musical development not aligned with the time period, making option D incorrect. However, the piece does feature polyphonic textures, which were a characteristic of the high medieval era and fully developed in early Renaissance music, making option C a correct description of Gaude Maria Virgo.
Medieval music, particularly during its later stages, started to develop polyphony, which became increasingly complex. Polyphonic music contained multiple independent voice parts, each with its own melody, yet creating a harmonious texture when combined. This characteristic is a defining feature of Gaude Maria Virgo.