Correct

考据

/ kǎojù / 
Strokes

Definition

textual criticism

Example

As a Verb

do textual criticism/research

1
Nàxiē
那些
yǐ
已
yǒu
有
dìnglùn
定论
de
的
wèntí
问题
méiyǒu
没有
bìyào
必要
kǎojù
考据
  
。

There is no need to do textual research into those issues that have got final conclusions.