单选题 How is finding a birth mother like getting a key to a diary?

A、 A diary comes with each birth certificate.
B、 The adoptees will have a chance to find out about their mother's life.
C、 If the key opens the diary, you get a birth certificate.
D、 The adoptee will have to keep a diary before they get a birth certificat

【正确答案】 B

【答案解析】第四段。Kathy Allen认为她的生活的某些方面被封锁了很久，现在，她能够知道她的母亲的事。