答案及解析：[单选题]一个原因是我们对某些理论和原则缺乏理解,这解释了为什么我们要研究更多的理论。() A one reason is that we don’t have a correct understanding

问题：

[单选题]一个原因是我们对某些理论和原则缺乏理解,这解释了为什么我们要研究更多的理论。()
A
one reason is that we don’t have a correct understanding of certain theories and principles, which is why we need to study more theory.
B
One reason is our lacking of understanding about certain theories and principles, which