The main character in a story is called the "protagonist".
In a similar manner, his enemy is called the antagonist.
Yes, Prospero is so impressed by ariels matchmaking that he said that he would set ariel free for that one act. Thus, having fulfilled all of Prospero’s tasks, and Prospero himself now being free to leave the island, Ariel is set free.
The answer is D. When it comes to giving people good advice, Jon is a regular Yoda. Allusion is when you say something in a passing fashion without actually making direct reference to it (a person, place, or thing.) Since you are calling Jon a 'regular Yoda' you are comparing him and making a sort of passing reference, but are not speaking directly about Yoda himself. So this is Allusion. Another example of an allusive sentence would be: When my uncle won the lottery he acted like a total Scrooge.