Which type of layout requires additional configuration in addition to the skin rule?

The most suitable choice for this question is grids for responsive design. Grids are specifically designed to adapt to various screen sizes and layouts, which necessitates additional configuration beyond just the skin rule to ensure that they function correctly across different devices. This may involve defining breakpoints, specifying how many columns should adjust or stack at various screen sizes, and outlining how the content within those columns behaves.

In contrast, static layouts, column layouts, and dynamic layouts primarily rely on predefined properties and configurations within the skin rule. Static layouts are fixed and do not change based on the screen size, column layouts have a simpler structure that is less dependent on dynamic adjustments, and dynamic layouts are designed to adapt to their content but usually don’t require the complex configurations that responsive grids do. Thus, when focusing on the necessity for additional configuration, grids for responsive design clearly stand out as the layout type that requires this more detailed setup.