A play is watched by an audience. An audience refers to a group of people who gather together to watch a performance, such as a play, movie, concert, or other forms of entertainment. The term "audience" implies that the people are present to witness or observe something, rather than participate actively. In the context of a play, the audience sits in the theater and watches the actors perform on stage. They are usually quiet during the performance and show their appreciation at the end with applause.