Even though is tru that the D. option is one of the characteristics of this type of music, The one that perfectly describes it is the C. option: It was performed with no instruments. This type of music is very similar to the gregorian musica and there is an absense of instruments.
1. staff 2. a white key 3. tell musicians how to figure the names 4. treble and bass 5. it tells you where g is 6. a b c d e f g 7. leger lines 8. bass 9.5 not sure of 10