Spatial order is another principle of organization. In this pattern, items are arranged according to their physical positions or relationships. To use spatial order in your essay, emphasize how objects, people, places, or concepts relate to each other in a particular manner.
(Because you're writing an essay about something that has to be explained from sight -what you see- it is considered an Spatial Essay.)
There isn't a logical way to explain the painting.
There isn't a particular order that you must explain the painting. ( Both eliminating option B and C )
Answer: D. spatial