Memoirs are written by authors who present parts of their life that they consider to be important and since they depend on memories and not on complete factual accuracy they are often very artistic and can be very creative. This is why many famous people often write memoirs when they are older because they tell about stories from their youth.
Generally speaking, A. Third person omniscient often provides insight into the character's mind, giving the reader the character's motives and/or feelings.
