Because she’s a dumb feminist
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.
I think it is b. Most beautiful, as c and d don't make sense. A is a possibility, but I'm pretty sure it is b. Most beautiful.
Answer:
humans are warm blooded mammilla animals.
Explanation:
