In shakespeare's the tempest, prospero's dukedom is taken from him, and he is set adrift. gonzalo, however, provides him with not only clothing and food, but also books prospero "prize[d] above [his] dukedom." prospero then proceeds to teach both miranda and caliban from his books and to take charge of the island.

this backstory illustrates which two central themes in the play?
a. the desire to rule and the value of knowledge
b. betrayal and the difficulty of distinguishing heroes from monsters
c. the power of the supernatural and the value of travel
d. the imperialist attitude and the questionable value of freedom