Answer:
- Option-(D): Acoustic of string.
- Option-(A): Moral character.
- Option-(D): Brass instruments.
- Option-(D):Greek.
- Option-(B): Organ.
- Option-(C): Plato.
- Option-(D): The Romans censored music according to the doctrine of ethos.
- Option-(B): Four eighth notes.
Step-by-step explanation:
Now we know that Pythagoras study in his most famous musical experiment on the acoustic of strings. While, moral character is directly influenced by music as per the doctrine of ethos.
Rome was once a great and strong military might, as it had a number of warriors to fight for the country and it will be more amazing to know that the Roman military used to communicate the battle orders through the brass instruments. The Greeks are believed to be one of the first or we can say one of the primary societies how had the idea of having music as the source of entertainment for the masses rather then just a field of arts. Organ is believed to be originated from the very familiar form of musical instrument called as the hydraulis. Music is recognized as the source of peace and harmony by many historians and other well known figures that lived on the face of this land many centuries ago, and among them Plato had no different idea about music,as he encouraged the idea of having music as the part of education for kids. While, the Romans censored music according to the doctrine of ethos. And, the provided picture of the rhythmic notes are the four eighth notes of music.