Answer:
C. Because Stephano wants to be Caliban's master, not just king of the island.
Step-by-step explanation:
Stephano is a minor character in William Shakespeare's "The Tempest". He is the butler of King Alonso of Naples and was also part of the survivors of the shipwreck.
Caliban was the earthy slave of Prospero, the usurped Duke of Milan. Caliban conspired with Trinculo, the court jester, and Stephano to steal the magic books from Prospero and make Stephano king of the island. But Caliban's idea to make Stephano king of the island is an example of faulty thinking because he did not know or realize that Stephano wanted not only to rule the island but be master over Caliban too.
Thus, the correct answer is option C.