According to the article $($from our Content, Week $2)$ 'Best Practices for Excellent Presentations in the Virtual World', virtual presenters should use which of the following 'vocal energy' techniques to keep their virtual audience engaged?

Question $25$ options:

volume; tone; pace; intonation

speak with conviction; don't race; keep up an engaging pace; be in command of your body

tone; pace; enunciation; pronunciation

volume; tone; pace; enunciation