As a law graduate, he ought to know that eyewitness______ is notoriously unreliable, espec
As a law graduate, he ought to know that eyewitness______ is notoriously unreliable, especially so when the witness is not an expert.
A.insight
B.remark
C.argument
D.testimony
请帮忙给出正确答案和分析,谢谢!