This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to do stage lighting
Know your performance genre and the simple principles behind lighting that genre.
A standard play has lots of dialogue. An audiences ability to understand dialogue is directly linked with their visual connection with the speakers face.

Options are: I. When you have large audiences in the workplace, you can play a number of different roles; but the methods of lighting are very different. Understand the basic rules of theater in order to do your lighting on set.. II. Because the circle of characters which surround the actors is the same size as a square of fabric, there is no obvious taboo distance between actors and the audience. If there is a good distance, a film director may be willing to kick it up a notch.. III. Very important, what you're doing is set up the tone of the play. If you're doing a monologue, choose a performance genre.. IV. Make sure you have a lot of light focused to the actors faces. Dance is where the movement of the body is most important..
The answer is:
IV.