Answer:
C, because getting familiar with the audience, or mock audience, leads to you not being nervous to talk.
What exactly do you want?
Answer:
When you fail at something, it let's you determine what you strengths are and what you still need to work on. Failure can get you ready for similar instances in the future, because at that point you will have already learn from your mistakes. Also, if you fail enough times, you response to failure will change from sad and disappointed to eager and ready to learn from it.
Explanation:
The artist has a niffy approach to art.
Cool: Marvelous, divine, or keen could work also
She is caring and warm,at first but then is cold and sly