Which hosted web layer consists of static images often used for raster data publication?

The choice of a Tile Layer as the correct answer is appropriate because tile layers are specifically designed to serve raster data as static images, which are pre-rendered and stored in a grid-like format. Each tile corresponds to a particular geographic area at a specific zoom level, allowing for efficient loading and visualization in web mapping applications. This method is particularly advantageous for displaying base maps, satellite imagery, or any other raster data that doesn't change frequently.

In contrast, feature layers contain vector data representing geographic features like points, lines, or polygons, which can be dynamically queried and rendered based on user inputs. Dynamic layers are also interactive and can change based on user requests or layers of information across various scales, making them less static than tile layers. Service layers pertain to a broader category that can include both vector and raster data services but do not specifically denote a layer type focused on static imagery. Therefore, the use of a Tile Layer is most closely aligned with the requirements of serving static images for raster data publication.