Which option is NOT a valid action in the Select tool?

The valid actions performed in the Select tool include modifying column properties such as changing a column's size, renaming columns, and removing columns from the dataset.

Duplicating a column, however, is not an action that can be executed directly through the Select tool. While the Select tool allows users to manage existing columns effectively, duplicating a column would require a different approach, typically involving the use of the Sample tool, Formula tool, or the Multi-Row Formula tool to create a new column based on the existing data.

Understanding the capabilities of the Select tool is essential for data preparation in Alteryx, as it plays a vital role in shaping the data structure, optimizing data workflows, and ensuring that the necessary columns are available for subsequent analysis.