Malcolm X had a significant impact on the Black Power movement, particularly through his views on self-determination, racial pride, and the right to defend oneself. The most relevant option regarding his influence would be:
D. He believed that violence in response to violence was justified.
Malcolm X's philosophy emphasized the necessity of self-defense and the legitimacy of using force against oppression. This perspective resonated with many in the Black Power movement, which sought to advocate for empowerment and assertiveness among African Americans, often contrasting with the nonviolent approach of earlier civil rights activists.