A. "While nominating him for the award, the Nobel Prize Committee remarked that he was the world's spiritual and philosophical leader against inequality."
Explanation:
This is the detail that explains why Wiesel was awarded the Nobel Peace Prize in 1986. In this sentence, we learn that the Nobel Prize Committee believed him to be the world's spiritual and philosophical leader against inequality. This, therefore, informs us of the criteria that the committee followed when deciding to award him the Nobel prize.
