When is a comma necessary to set apart a subordinate clause

Which statement best reflects how martin luther king, jr. uses rhetoric and style in paragraph 9 of "letter from a birmingham jail" to assist him in advocating the use of nonviolent direct action to achieve justice for negro citizens in birmingham? click here to read the letter.

What does the interaction between the nurse and erkan in paragraph 1 reveal about erkan? erkan is upset because no one believes he has been robbed. erkan is quite angry but he is mostly harmless. erkan is incoherent and won't listen to reason. erkan is a violent man and poses a threat to those around him.

What does the mother language reveal