About an hour before his class, Jon finds a quiet place and thinks through all the aspects of his speech. He "sees" himself beforehand; then he "observes" himself going to the podium, setting up his visual aids, and giving his speech. Finally, he mentally thinks through the question and answer period and "watches" himself returning to his seat. He's rehearsing ________

A) ?by controlling his internal monologue.
B) ?by knowing the speechmaking process.
C) ?through physical relaxation.
D) ?through visualization.
E) ?through power posing.

D