Based on the argument presented, the fallacy is most probably that of Hasty Generalization.
What is a hasty generalization fallacy?
It refers to when conclusions about a small group of people with certain qualities, are applied to all people with those same qualities. This therefore results from an insufficient sample size.
The above is a hasty generalization because the Supreme Court Justice, used a section of African Americans who were enslaved, to decide that all African Americans could not be American citizens.
In conclusion, option A is correct.
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