The correct answer is: Option C. He says that accepting life the way it is does not mean tolerating injustice.
The speaker explicitly clarifies the opposition between the two concepts in discussion. The first half of the excerpt is used to justify accepting life, while the second half is used to express the speaker's concern on injustice.
Taking account of the previous information, the speaker states he's willing to live life as it is: Going through it fighting injustice.
