Which of the following statements BESTcharacterizes public speaking in the twentieth and twenty-first centuries?

A) Students of public speaking practice the arts of declamation and elocution.
B) Great orators continue to refine guidelines for public speakers.
C) Technologies let speakers reach worldwide audiences and expand the parameters of public speaking.
D) Age-old public-speaking traditions are no longer relevant as we develop new and improved methods for addressing some of the most difficult challenges in history.

C