To analyze the artwork "Landscape with Classic Ruins and Figures" by Marco Ricci and Sebastiano Ricci effectively, the best question to focus on during the critique would be:
"How did the artist use vanishing point(s) and orthogonal lines?"
This question allows for a deeper analysis of the composition and perspective in the painting, which is crucial for understanding the spatial relationships within the artwork. By examining the use of vanishing points and orthogonal lines, you can gain insights into how the artists constructed the scene to guide the viewer's eye and create a sense of depth, as well as how these elements contribute to the overall effectiveness of the landscape and its ruins.
The other questions also provide avenues for discussion but do not focus as directly on the formal analysis that vanishing points and lines represent.