Answer:
common theme
Explanation:
According to my research on paintings by various famous artists, I can say that based on the information provided within the question the best way to illustrate stylistic differences between works of art is to compare works that have a common theme. By doing so you can observe the different techniques and representations that the artists use to create the same generalized scenery/subject. Therefore spotting the main differences.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.