At this point, the writer would like to show how education and public speaking experts have been influenced by the theory about the importance of body language. Given that all of the following are true, which choice best achieves the writer’s purpose?
\begin{equation}
\begin{array}{l}{\text { A. NO CHANGE }} \\ {\text { B. now teach presenters to make purposeful }} \\ {\text { movements and focused gestures. }} \\ {\text { C. have adjusted the focused gestures. }} \\ {\text { workshops for teachers and business }} \\ {\text { D. question how the size of an audience affects the }} \\ {\text { power of a presenter's body language. }}\end{array}
\end{equation}