Concept:The main conflict Adah experiences in England is racial discrimination, which makes her feel like a "second-class citizen."
Explanation:Adah travels to England with high hopes, but Francis quickly reminds her that she is now living as a "second-class citizen."
Her greatest obstacle is not her gender, education, or money, but the colour of her skin.
During her search for a better apartment, she discovers that many landlords reject her simply because she is black.
Several rental notices openly declared, "Sorry, no coloureds."
This experience makes her realise that "her colour was something she was supposed to be ashamed of."
Although Adah faces hardship as a woman and struggles financially, these challenges do not define her status in England as strongly as racism does.
Her blackness is what marks her as inferior and bars her from equal opportunities in housing and society.
Therefore, the central challenge she battles in England is racism.
Answer:D. being a black person