Final answer:
Harry showed he had chosen Hallows over Horcruxes when he decided to destroy the Elder Wand, demonstrating his commitment to prioritizing the greater good over personal power.
Step-by-step explanation:
The subject of this question is from the Harry Potter series, which falls under English literature. The question refers to a critical moment in the series when Harry Potter demonstrates his values and priorities through his actions. Specifically, Harry showed he had chosen Hallows over Horcruxes when he decided to destroy the Elder Wand (option a). It's an essential theme in the story where Harry is given the choice between pursuing the Deathly Hallows, which could make him the master of death, or focusing on stopping Voldemort by destroying the Horcruxes that contain parts of Voldemort's soul. His choice to destroy the Elder Wand, one of the three Deathly Hallows, instead of using its power to defeat Voldemort, emphasizes his commitment to the greater good over personal gain.