Which UI component can hold multiple UI elements in a horizontal row with fixed spacing?

The Horizontal Layout Group is specifically designed to arrange multiple UI elements in a horizontal row while maintaining a consistent spacing between them. This component dynamically adjusts the position and size of its child elements based on the layout settings you configure, such as padding, spacing, and alignment.

By using the Horizontal Layout Group, developers can easily manage the layout of UI elements without manually adjusting their positions. As the screen size changes or if new UI elements are added or removed, the Horizontal Layout Group will automatically reposition the elements, ensuring that they remain aligned correctly in a row.

In contrast, other components like the Grid Layout Group create a more structured grid layout, which may not suit the requirement for a simple horizontal arrangement. The Vertical Layout Group organizes elements vertically rather than horizontally, which does not align with the question's needs. The Canvas Group primarily serves to control the visibility and interaction of UI elements as a group rather than dictating their layout.