Before Presenting Her Speech,Ursula Was Feeling Very Nervous,so She Sat

Before presenting her speech,Ursula was feeling very nervous,so she sat down and said to herself,"I know this stuff better than anyone else.I've practiced it.My message is well organized.I know I can do it.I'll do a good job." What guideline for building confidence is Ursula following in this example?

A) Channel your nervous energy.
B) Make practice real.
C) Visualize your success.
D) Give yourself a mental pep talk.