Which tool is used to create a polygon from selected line features?

The most appropriate tool for creating a polygon from selected line features is the Line to Polygon geoprocessing tool. This tool specifically facilitates the conversion of line features, which are composed of connected vertices forming paths, into polygon features, which are defined by closed boundaries. When using this tool, the software processes the selected line features and constructs a closed polygon based on the geometric arrangement of the lines.

Using the Line to Polygon tool is essential in various GIS applications, such as creating boundaries or areas that are represented by linear data, as it streamlines the editing and creation process, avoiding the need for manual construction of polygons from scratch. This capability is particularly useful in scenarios where linear features delineate certain areas, such as rivers forming the edges of a floodplain.

Other tools mentioned do not serve this specific purpose of converting lines directly into polygons. For instance, the Planarize Lines tool is meant for modifying line geometries to remove overlaps or create new intersections but does not convert line features into polygons. The Construct Polygons tool generally assists in editing existing polygon features rather than creating them from line data. Lastly, the Merge command on the Editor menu is used to combine features of the same type but does not facilitate the transformation of line features into polygons