This seems more like an opinionated question, and less of one that has a real answer. However, I would choose B because it would make a follow up question easier, and it seems like it’s more of what the teacher would be looking for.
Formal language I believe that is the right language
Answer:
The fire led to legislation requiring improved factory safety standards and helped spur the growth of the International Ladies' Garment Workers' Union (ILGWU), which fought for better working conditions for sweatshop workers. The building has been designated a National Historic Landmark and a New York City landmark.
The word <em>mistreated </em>comes from the "treat" family.
First there is the verb to treat, then the noun treat, then the adjective treated, then the noun treatment, then you have the verb to mistreat, and then in the end you have the noun mistreatment and the adjective mistreated.