Answer:
The detail about medical inspections in "Ellis Island" best supports the central idea that immigrants faced several different challenges. The passage describes the inspections that immigrants faced upon arrival at Ellis Island, which were conducted to identify those who were "undesirable" due to criminal records, mental illness, or financial instability. Medical inspections were also conducted to identify those with contagious diseases, such as tuberculosis or trachoma. These inspections were just one of the many challenges that immigrants faced when coming to America. Therefore, the best answer is: Immigrants faced several different challenges
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