Pitch could stand to be lower, but I think more sophisticated, scholar tone you have for it makes up for its shortcomings. Delivery is pretty good throughout, with the Elder Speak not really flowing as well as it should; that's a nitpick on my part however. Tone is actually flawless for this one, you represent the character's spectrum of emotional positives and negatives here exceptionally. The third line specially shows the focused resolve for the character. Out of all of your attempts, I think I like this one the most, as it seems the most balanced and consistently well executed out of all of them. Also, good attempt at the Elder Speak, they're not fun lines to speak out.
Thank you for all of your constructive criticism! I won't take up all your time by replying to each of them individually, so I'll just say here that I appreciate the detail you've gone into, it's a big help in understanding exactly what you want out of the characters. I don't think I'll be retaking any of the auditions, I feel that any differences would be too minute to really warrant it, but I'm happy to work with any and all direction if you choose to cast me in the final project.