When he says this line "a knavish speech sleeps in a foolish ear" he is telling Rosencrantz that his good advice has been lost on his "friend's" stupidity and desire to be in the good graces of the king.
I agree with Azharui. Although movie ratings do work as a general advisory and disclaimer, there may still be content that each individual parent might disagree with. For this reason, adults should monitor all movies their child sees, and should have the right to forbid their child from watching certain programs.
The correct answer is option B "accurately depict the African American experience". Langston Hughes the author of "The Negro Artist and the Racial Mountain", is considered a writer that introduced jazz in much of his poetry. In Hughes own words, he wrote so many jazz poems because "jazz to me is one of the inherent expressions of Negro life in America" (1512).