Answer:
(A) He sees the genuine pain Daisy has been going through, and he feels very sorry for her.
This is how Nick feel about Daisy's story after she tells it--after she finishes speaking.
Explanation:
The story ‘The Great Gatsby’ talks about America’s dream which looks unattainable. The protagonist, Jay Gatsby, had wealth and status but wanted to spend his life with his love, Daisy.
Daisy liked Nick but was fond of Gatsby as well after their reunion. She also has money and loves her lavish life. She cried after reuniting with him and Gatsby felt that she was genuine. But Daisy loved Gatsby only for this wealth. She also knew about Tom’s affairs for so many years, but she was with him only for his power and money.