Which layout type is specifically designed for responsive design?

Grid layout is specifically designed for responsive design because it allows for a flexible arrangement of elements that adapt to different screen sizes and orientations. This layout utilizes a grid system that automatically adjusts the width and positioning of content based on the user's device, ensuring a seamless user experience across various platforms. Grid layouts make it easier to organize UI components in a structured manner while allowing for scalable designs that maintain visual balance, accommodating elements to rearrange or resize according to the available space.

In contrast, static and fixed layouts are less adaptable, as they tend to have fixed dimensions that do not respond well to changing screen sizes. Static layouts provide a uniform structure that may not adjust, while fixed layouts are bound by specific pixel values, preventing dynamic resizing. Freeform layout allows for unique arrangements but does not inherently support the principles of flexibility and responsiveness that grid layouts offer. Therefore, grid layout stands out as the optimal choice for creating responsive UI designs.