What harmonic principle did Rameau codify in his Treatise on Harmony?

The black color of the Bundu Mask symbolizes:

a. water, coolness, and humanity b. war and strength c. high rank d. tranquility and introspection

(hamartia) In classical Greek tragedies, the __________ (__________) is a serious personal misjudgment in the character that leads to the climax

Fill in the blank(s) with correct word