The correct answer is D. catalogued. Ludwig von Kochel was a famous musicologist who was best-known for cataloguing Mozart's work. Mozart didn't need to be discovered, he was practically always famous; nobody secretly wrote his music as he was a music genius; many people paid him to write music so Kochel wouldn't be the only one.
Symbolic meaning with color refers to the special meaning(s) a color can represent to certain culture. Answers may vary, but should include at least 2 examples: - seeing red - feeling blue - green with envy