Answer:
"One action is a cause, which leads to another action that is the effect of the first action." best describes a cause-and-effect relationship in a play.
Step-by-step explanation:
The second option and third option describe completely different text structures (the second being compare and contrast, while the third one is problem and solution). The fourth one is incorrect as well, due to the fact a cause produces an event, and an effect is what results from the event—not vice versa. So therefore, the first option is correct.