单选题 Which of the following makes the demonstration most persuasive?

【正确答案】 C
【答案解析】[试题分析] 事实判断题。
[详细解答] 本题答案只需通过词组in the most convincing demonstration of all中的most就很容易判断后面的实验:to read through glass, blindfolded是最persuasive的。因此,答案为C。