New Professors Often Have to Concentrate Very Hard to Give

New professors often have to concentrate very hard to give a lecture,and monitor themselves carefully to make sure they're not talking too fast and that they are using appropriate and clear examples.More seasoned professors don't have to concentrate as much,and can talk clearly and engagingly,reorder the overheads,and keep an eye on students all at the same time.This example represents the transition from _______ processing to _______ processing as professors gain experience.

A) controlled; automatic
B) random; systematic
C) automatic; controlled
D) unconscious; conscious
E) controlled; random