According to paragraph 3, what is the probable reason that privacy concerns about PSD2
are unnecessary? ( ).

参考解析：

题干问，根据第三段，下列哪项是对于PSD2规定涉及到的隐私问题担忧很多余的原因。根据第三段some concerns about PSD2 are legitimate. In particular, it is reasonable to wonder about the privacy and security implications of sensitive financial data being shared with third parties. But banks themselves are hardly invulnerable to cyber attack (网络攻击）. And the solutions that the European regulators propose to deal with these worries look promising.可知，一些对于PSD2规定的担忧是合理的，……。但是，银行自身对于网络攻击，其实几乎是牢不可破的；且欧洲的监管者提出了一些解决这些担忧的方案，这些方案是比较靠谱、对问题的解决也是有盼头的。所以，根据以上这两个原因，对于PSD2规定是不需要担忧的。因此，B项就是其中的原因之一。而C项错在“is strong”，原文的用词是“are hardly invulnerable”，即：几乎，C项少了hardly这个词，属于用词不严谨，说法太绝对，排除；AD属于文中未提及，故排除。故本题正确答案选B。