Answer:
A. enunciation
Enunciation refers to the clear and distinct pronunciation of words. If Chloe gets "mush" mouthed and garbles her words when she's nervous, focusing on her enunciation would be beneficial. This involves slowing down her speech, moving her mouth and lips fully to form words, and emphasizing each syllable. Practicing these techniques could help Chloe to speak more clearly, even in nerve-wracking situations.