Answer:
The answer is most likely A
Explanation:
I eliminated the rest out the only one that would make sense is a. It’s not c or b because it has nothing to do with tying a sound to the character. And it’s not d because motif is theme so the sound would be overall not just one specific character hope this helped :D
Although I'm not sure, I do believe it is "Delphic Sibyl". Good luck!