Why is A correct? Why is B incorrect?

Hi Ryan, thanks for the question. Answer choice A is correct because it recaps what the passage is aiming to do. Present Schmand-Besserat's theory and explain what led to this idea. Answer choice B confuses ideas. Nothing in the passage confirmed Schmand-Besserat's theory. Rather, she used all of the facts presented to formulate her theory. I hope this helps. Please let me know if you have any other questions.