Formal.
As far as I know, there is no such thing as either standard or practiced diction. Informal is the way you communicate with your friends, for instance, which is not how you would write a thesis paper, legal document, etc.
Answer:
A
Explanation:
Nobody will ever really understand anyone else's story because nobody knows what anyone else is going through.
Answer: Olaudah Equiano's life as a child was extraordinary since he was sold as a slave whe he was 11 years old but he could overcome that terrible situation and eventually supported the abolitionists.
Explanation: he was sold as a slave at the age of 11. After that he had enough money to buy his freedom and he supported the abolitionist movement.
He sees a dagger that he says Calls out to kill Duncan.