If you provided the historical background it would be more possible to answer your question. And I think there should be an options to choose. But I'll help you as I've found the similar question with options and background. So the answer is "<span>D. so our national policy in foreign affairs has been based on a decent respect for the rights and dignity of all nations, large and small."</span>
Polonius is using his daughter to spy her conversation with Hamlet. He teaches how to act naturally, how to walk and pretend that she is reading.
In that last phrase, he is saying that we humans often act in deceitful ways, for which we are to blame.
He admits that he is making a mistake, in teaching that kind of behaviour to his own daughter.
C ) He alludes to literature from other places an times
