The detail about Antoine which developed this idea about Grant's negative attitude about his own community is option D.
Antoine asserts that since all his former students are either dead or in prison, educating them is pointless. Antoine is Grant's former teacher, he wasn't giving Grant and the other students quality education because he assumed it is pointless to educate them, since all his former student are either dead or in prison.
Antoine forgot that quality education is the best legacy in order to help develop and improve the society.
Therefore, the correct answer is option D.
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