B.
none of the others even sound right
John Proctor
Explanation:
John Proctor is the protagonist of the play. Once he enters the play, the real plot begins. Up to that point, the play's exposition has introduced the town, some of the people in the town and the situation that will drive the plot: the accusations of witchcraft.
Answer:
Commensalism is a type of symbiotic relationship where one party benefits and the other party is not significantly affected. A hermit crab takes over a discarded shell of a snail and uses it for his house. The hermit crab benefits and the snail are not affected - it's already discarded the shell and is nowhere around.
Explanation: