Hello. You did not provide the excerpt to which you are asking questions, which makes it impossible for the question to be answered. However, I will try to help you in the best possible way.
The description of a scenario in a text aims to place the reader in a living and influential space in the story. If the scenario is described in an excerpt, the author wants to show how this scenario is important in the story and how it influences the actions involving the characters. In this case, to answer your question you must interpret how the characteristics of the scenario are influencing the characters. Options A and C are the ones that best exemplify the influence of the scenario in a text, and may be the options that you should pay more attention to.
Friar Lawrence spent time discussing about his passion for herbs and alchemy because these are important elements in the final act. He explains that there is a flower which if you smell, you will feel better but if you eat the fruit, you will fall into coma. These are foreshadowing for the final act.
One antonym would be variety
