Answer:
I believe the correct answer is B. Yes, because it strengthens the thesis by conceding that the works Tyler studied are important ones.
Explanation:
I believe it's important for Tyler to mention some of the works that he explored because those are important works that could strengthen or debunk his theory. In these works, da Vinci allegedly portrays himself, so by studying those exact works, he might confirm his theory. It's very important to state evidence in your thesis statement and this is the evidence here.
It shows he has life experience and knows what he’s talking about
To be a substantiated opinion, you must have evidence to back it up or be able to point to something to back it up.
Answer: A. The writer states a fact that can be checked by simply going to the large computer company and seeing where is began.
You would need a lot more evidence to prove that small businesses are the reason America has a strong economy.
Option "C" cannot be backed up with a specific fact easily.
Letter "D" would be a more generic statement.