She has become more confident
Answer: D
Explanation: Metaphors compare things to other things
It is difficult to write a PSA or a Public Service Announcement that operates in just sixty (60) seconds because you have to consider a lot of factors into writing it. First, you consider what message you want to convey. Second, you consider what kind of audience you're targeting. Lastly, you have to make sure that the PSA will effectively convey the message to the target audience in such short amount of time.
When the two comets collided, it was a moment of impact.
The students had a moment of impact in the hallway when they ran into each other.