单选题

Juries in criminal trials do not base verdicts on uncorroborated testimony given by any one witness. Rightly so, because it is usually prudent to be highly skeptical of unsubstantiated claims made by any one person. But then, to be consistent, juries should end an alltoo-common practice: convicting defendants on the basis of an uncorroborated full confession.

Which of the following, if true, most strengthens the argument above?

【正确答案】 D
【答案解析】