Final answer:
The title of Curse-Breaker in the Weasley family belongs to Bill Weasley. (Option b)
Step-by-step explanation:
Bill, the eldest son of Arthur and Molly Weasley, is known for his career as a Curse-Breaker for Gringotts Wizarding Bank. Curse-Breakers specialize in breaking magical enchantments and protecting treasures in ancient wizarding tombs and vaults.
Bill's expertise in this field is highlighted during the events in the Harry Potter series, particularly in "Harry Potter and the Deathly Hallows," where he plays a crucial role in helping Harry, Ron, and Hermione break into Gringotts. Bill's occupation as a Curse-Breaker underscores the diversity of magical professions within the wizarding world and adds a unique dimension to the Weasley family's dynamic.
Therefore, the correct answer is: b) Bill Weasley