C is correct purely by process of elimination. First you have to know what the definitions of both words or have an example in mind. Usually monologues are just long or serious dialogue spoken by one character. Other characters can hear and can respond. A soliloquy is a theatric aspect. This strategy lets the audience have an understanding about what the actor is thinking. They aren't usually heard by other characters and are not meant to be.
Max beomes upset when he learns that Freak has died. He believed that they were going to "fix" freak and did not understand that his injury would result in his death
"Suddenly, your friend glances over your shoulder and bursts out laughing."
Explanation:
Maybe he wasn't listening to you to begin with. In order to accurately interpret the nonverbal behavior in this context, you need to know why he was laughing.
