The answer for your question is B: Formal
Explanation: john has only read two books, a scientific journal his mother acquired while working in the hatchery, and The Complete Works of Shakespeare. The name of the second book was The Chemical and Bacteriological Conditioning of the Embryo.
It would be A hope this helps
A person of great knowledge of money and business
B: personal opinions
Because readers can have different opinions and it makes an essay more biased.