No hablas español, sorry....
Answer:
A
Explanation:
It unites music and drama because it is part of the orchestra music.
I hope this helps! I only really new this much but i definitely know that i have the correct answer. Have a great day/night!
Proportion is the relative size of objects as compared to other parts of the piece. Balance is the arrangement of the elements within the piece that give it an aesthetically pleasing equilibrium for the observer.