Raj, an Indian Publicist Working in the United States, Has

Raj, an Indian publicist working in the United States, has a consistent style of pronouncing certain words. For instance, while giving any presentation, his audience notices he pronounces "bus" as "baw-s" and "police" as "pouw-lis." What aspect of Raj's presentation delivery was illustrated in this scenario, and why is it important?

A) Dialect; listeners tend to prefer a dialect similar to their own.
B) Pitch; listeners tend to listen more carefully if speakers vary their vocal pitch.
C) Volume; listeners take speakers more seriously if they speak softly.
D) Articulation; listeners appreciate speakers who display good enunciation skills.