Answer:
antitheses are used to strengthen sn argument by using either exact opposites or simply contrasting ideas,but can akso include both,
Prospero has Ariel create absolute chaos on board the ship while Prospero conjures a storm with his magic. Ariel's devices have everyone running around like crazy and jumping off the boat as he sets fire to parts of it. He made sure though, that everyone was near enough to the shore and no one drowned, so that Prospero's plans for them on the island could be carried out.
