Which feature helps create responsive designs in Dreamweaver?

Fluid grids are essential for creating responsive designs in Dreamweaver because they allow for layouts that adapt to different screen sizes. By using a fluid grid system, designers can create a flexible layout that re-sizes itself based on the dimensions of the user's device. This is achieved by using percentages rather than fixed pixel values for widths, enabling the content to flow and reorganize seamlessly on various devices, whether it be a desktop, tablet, or mobile phone.

This approach enhances user experience since it ensures that websites remain accessible and visually appealing across a wide range of devices, accommodating changing screen resolutions and orientations. In contrast, fixed widths and static layouts do not allow for such adaptability, as they tend to maintain a specific size regardless of the display, potentially causing layout issues on different screens. Image maps, while useful for certain layouts and interactions, do not inherently contribute to responsive design principles. Thus, fluid grids stand out as the most suitable feature for achieving responsive designs in Dreamweaver.