Final answer:
Nelson Mandela's quote that shows his concern for both the oppressed and the oppressors is "I am not truly free if I am taking away someone else's freedom, just as surely as I am not free when my freedom is taken from me."
Step-by-step explanation:
The quotation that best exemplifies Nelson Mandela's concern for his white oppressors is D) "I am not truly free if I am taking away someone else's freedom, just as surely as I am not free when my freedom is taken from me." This statement reflects Mandela's understanding of freedom as a universal right and indicates his inclusive vision for post-apartheid South Africa. Rather than seeking retribution, he recognized the importance of human dignity for all and advocated for reconciliation and co-existence between the oppressed and the oppressors.