the least support型问题的回答

如果在问题中问：

Which of the following, if true, provides the least support for the author's argument about commerce and political parties during Jackson's presidency?

则应该选择什么样的答案呢？是最不能支持argument的答案，还是能支持但是力度最小呢？如果出现与argument的内容无关的项，那是否应该选择该项呢？

亟待回答，马上就考试了，郁闷