What Does Shakespeare's Hamlet Mean When He Says the Following

What does Shakespeare's Hamlet mean when he says the following? "Be not too tame neither, but let your discretion be your tutor: suit the action to the word, the word to the action; with this special observance, that you o'erstep not the modesty of nature."

A) "When you gesture and speak, please try to match the emotion of the words with your gesture."
B) "Don't hold yourselves completely still as you talk, but try to gesture naturally as you speak."
C) "We want our audience to believe in these characters as if they were real people."
D) All of these answers are correct.