Answer:
1. Luca and the chickens.
2. The chickens said "Cluck, cluck, cluck!"
The correct answer is this one: "a. theme." The element of drama supports the humorous tone of the play is the theme. The theme of drama as an element of the play will tell us what the story is about, the tone and the whole feeling or the environment of the story. In other words, it talks about the dominant atmosphere of the story.