What is the main function of stage directions in drama?

A. to describe what is inside each character’s head
B. to explain the theme of the drama
C. to communicate non-verbal information
D. to show what the characters say to each other

Which piece of information about doris lessing would more likely be found in the new york times article "doris lessing wins nobel prize in literature" than in the "doris lessing" biographical video? the opinion lessing has of the current political climate in south africa description of the home which lessing and her husband live in today