Is your school life that of other teens?这个句子中that是什么用法

问题描述:

Is your school life that of other teens?这个句子中that是什么用法
Is your school life ____ of other teens?
a.this b.the same c.one d.that
为什么选that啊?

that 是代词,相当于is your school life like the school life of other teens?