Final answer:
Miranda's reaction to Prospero causing the shipwreck demonstrates that she is compassionate and possesses her own independent moral judgment, suggesting she is not fully under Prospero's control.
Step-by-step explanation:
Miranda's questioning of Prospero's decision to cause the shipwreck in the play The Tempest by William Shakespeare most clearly indicates that she is empathetic and compassionate. The lines you've provided show Miranda's deep concern for the souls aboard the ship and her wish that if she had the power, she would prevent the ship's destruction and save the people.
This particular aspect of Miranda's character is evident by her distress over the suffering of the ship's passengers and her feeling that the cruelty of the shipwreck is unnecessary and unjust. Her questioning of Prospero, therefore, aligns best with the option that suggests Miranda is not fully under her father's control.
She has her own moral compass and sense of right and wrong, which guides her reactions independently of Prospero's actions and intentions.