Map frames are contained within what element in ArcGIS Pro?

Map frames are a fundamental component of layouts in ArcGIS Pro. A layout is essentially a final representation of a map or a combination of maps and other elements, such as titles, legends, and scale bars, intended for presentation or printing. Within a layout, map frames serve as containers that display the geographic data visualized in a specific view of a map.

When creating a layout, users can add map frames to incorporate different map views or to focus on specific areas of interest. Each map frame can be configured independently, allowing for customization of extents, scales, and visible layers. This flexibility makes layouts a powerful tool for producing professional-quality maps for distribution or publication.

The other options, while relevant to various aspects of ArcGIS Pro, do not specifically encompass map frames. Tools refer to functional capabilities within the software, projects are collections of GIS resources and settings, and databases pertain to storage solutions for geospatial data. Only layouts provide the contextual space where map frames can exist and be utilized effectively.