A passenger requests to change the name on their ticket due to a legal name change. What do you ask for？

A passenger requests to change the name on their ticket due to a legal name change. What do you ask for？
A.Their new favorite food.
B.A copy of the legal name - change document.
C.Their old driver's license.
D.A photo of their new ID.
正确答案：B
试题解析：当乘客因合法的姓名变更要求更改机票上的姓名时，为了确保变更的合法性和真实性，客服应要求乘客提供合法的姓名变更文件副本。