The answer is A: He was prepared to hurt someone.
Explanation for each option:
A. He was prepared to hurt someone. - This is the correct answer. In James Baldwin's "Notes of a Native Son," the narrator reflects on his actions and realizes that his anger and frustration had reached a point where he was ready to inflict harm on another person. This moment of self-discovery is significant in understanding his internal struggles and the impact of racial tensions on his psyche.
B. He has a deep love for writing. - This option is incorrect in the context of the specific incident with the waitress. While Baldwin does express a love for writing throughout his works, this particular moment is more about his confrontation with his own capacity for violence.
C. He hates all white people. - This option is incorrect. Although Baldwin discusses the complexities of racial hatred and his feelings towards white people, the incident with the waitress is more about his personal anger and readiness to act on it, rather than a blanket hatred for all white people.
D. He has many regrets because of his father. - This option is incorrect in the context of the attack on the waitress. While Baldwin does explore his relationship with his father and the regrets associated with it, the specific discovery after the incident is about his own potential for violence, not directly about his father.