The correct answer for the example of the environment of a setting is the option C. A sandy beach
Environmental settings mean the geographical location (particular area, country, fictitious world, building, etc.).
Nature, with its weather and climatic conditions, also has a relationship to the environment of a setting.
Sandy is the condition of a beach. It means that the beach is covered in or consists mostly of sand. This condition is related to the setting of the environment.
As a geographical location, a beach is a specific area in the world.
So, it is obvious that the example of the environment of a setting is the option C. sandy beach
This story is not true because the elapsed time between 9:00 pm and 4:00 am is five hours. The author also says the words "must've" which do not indicate an exact answer. I hope this helps!