【正确答案】 C

【答案解析】[解析] 文章第二段指出：The authorities who require one to fill up forms frequently demand answers to questions that one would hesitate to put to one's intimate friends．The worst of it is that，when faced with such questions，my mind goes blank and l can hardly remember my own date of birth，let alone my nationality.意思是：在填写表格时常常要求填表人填写本人甚至不愿意让亲密的朋友知道的私人问题，更糟糕的是，填表格时遇到这样的问题往往是大脑一片空白，甚至都会忘记自己的出生日期，更不用说自己的国籍了。这正好符合C选项所陈述的：忘记了一些基本事实。因此正确答案应该是C。