What did George advise me to do regarding my speech?

The suggestion to "run through it in front of a mirror" reflects a common technique used to improve public speaking skills. This method allows individuals to observe their own body language, facial expressions, and gestures, which are important aspects of effective communication. By practicing in front of a mirror, one can gain a better understanding of how they present themselves and make adjustments as needed.

This option emphasizes self-evaluation, which is crucial for enhancing performance in speaking situations. The other choices focus on different aspects of preparation, such as repetition, audience practice, and confidence, but they do not offer the same level of self-reflective feedback that practicing in front of a mirror provides.