Final answer:
This question is about the character analysis in a dramatic play scene and determining the emotions and motivations of the characters involved.
Step-by-step explanation:
The subject of this question falls under English because it pertains to the interactions and emotions of the characters in a play. In this specific case, it appears to be a question about character analysis or understanding the relationships in a dramatic scene.
In the given situation, Dallas storms off the stage after Johnny tells someone to leave her alone. From this context, it can be inferred that Dallas is protective of Johnny. This is evident from Dallas's actions of storming off, which indicate a defensive and caring stance towards Johnny.
The correct answer is C. Dallas is protective of Johnny based on the context provided.