Which tool is used to derive slope in ArcGIS Pro?

The tool used to derive slope in ArcGIS Pro is indeed the Slope tool. This tool is specifically designed to analyze a digital elevation model (DEM) to calculate the steepness or degree of incline of a surface. By applying this tool, users can produce a slope map, which visually represents the terrain's steepness across a specified area.

The Slope tool takes into account the elevation values from a raster dataset to compute the slope angle at each cell. The output is typically expressed in degrees or as a percentage, depending on the desired format. This information is crucial for various applications such as land-use planning, watershed management, and environmental assessments, where understanding terrain steepness is essential.

The other options do not refer to specific tools within ArcGIS Pro known for deriving slope. While "Grade" may imply a similar concept, it is not the designated tool for slope analysis in the software. The "Elevation Analysis Tool" is a general term and does not correspond to a specific feature in ArcGIS Pro. Similarly, "Terrain Modifier" sounds more like an overarching term for potentially altering terrain data rather than a specific slope analysis functionality. Thus, the Slope tool is the unequivocal choice for this specific analysis.