Which of the following best describes the original layers after sharing a web map with modified symbology?

The best choice is that the original layers remain unchanged in the source data because when you share a web map that includes modified symbology, you are essentially creating a new visual representation of the data for users. The symbology modifications—such as changing colors, symbols, or sizes—are applied to how the data is displayed in the web map but do not affect the underlying data itself.

This means that the source layers retain their original properties and attributes, allowing for consistent access to the data regardless of the changes made to the visual aspects seen by the users accessing the shared web map. This behavior is crucial for maintaining the integrity of the data and ensuring that any analyses or operations that rely on the original dataset remain accurate and unaffected by the visual display changes.

Altered visualizations help in creating customized maps for various audiences while ensuring that the foundational data is preserved.