Role play anyone? I'm bored

Which of these is a consistent periodic pulse separated into equivalent intervals of time?

Select the correct answer. what are the two types of lighting? a. dark and light b. key and fill c. gobos and snoots d. incident and reflected e. polarizing and optical

This is for my film class. if you would like to try writing your own play, having some experience in is a good idea. a. singing b. publishing c. theater d. editing