The correct answer is C. Perris quotes textual evidence that supports his thesis.
The analysis Parris is trying to make is that it's difficult to decipher the Rosetta Stone. To support this idea, he uses details from the text to explain how difficult it is - by mentioning scholars that have failed, despite their varying methods.
I’m not sure the context to this question, but not everyone had synesthesia so my guess is the answer is C, understand synesthesia.
B: He is uncertain about what will happen in the afterlife.
Answer
Theme; People cannot be judged by their affliction
Explanation
The person is described to be friendly but he was formerly associated with the Dutch Nazi Party membership before he later went to hiding. Mr. Frank previously noted that the man is trustworthy and he was not a Nazi at heart. The man is described to have joined the NSB because of loneliness thus he joined to get company of other young individuals and to create a social life because he was then a bachelor.