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.
So the reader can read it over and over without getting bored
Explanation:
<span>being killed by falling into a hole
He says, "another step before my fall.." implying he would have fallen to his death had he taken another step forth</span>
By introducing Nina to a new way to think about art.
Hope it help
