Which processes can be performed using the select tool?

The select tool in Alteryx is primarily focused on data preparation and transformation, allowing users to manipulate the structure and attributes of the dataset. One of its key functionalities is renaming columns, as it enables users to change column names to more meaningful or appropriate labels that are better suited for the analysis they plan to conduct. This is essential for clarity and proper data interpretation downstream in the workflow.

While the other listed processes are important components of data preparation and analysis, they are not functions of the select tool. Joining data from multiple sources is typically achieved using join tools designed specifically for that purpose. Creating new data streams often involves additional tools such as the union tool, and applying filters is generally done through tools specifically created to filter data. Thus, among the choices provided, renaming columns is indeed a direct and correct function of the select tool.