Which of the following tools is used to append additional records to existing datasets in Alteryx?

The Union tool is specifically designed to combine multiple datasets by appending records from one dataset to another. When you have two or more datasets that share the same structure (same columns), the Union tool allows you to stack these datasets vertically, creating a single comprehensive dataset that retains all records.

This functionality is crucial when you want to consolidate data from different sources or instances into one dataset for analysis. It helps maintain a tidy workflow, ensuring that all necessary data is easily accessible and organized in one place for further processing or reporting.

The Filter tool, on the other hand, is used to separate data into different streams based on specified criteria, rather than appending additional records. The Input Data tool is utilized to bring data into Alteryx from various sources, and the Output Data tool saves data to various destinations or formats. Neither of these tools performs the function of appending records to datasets.