Which Alteryx tool allows users to convert a data type of a specific field?

The Select Tool is the correct choice because it is designed specifically to manage the properties of fields in a data stream, including the ability to change the data types of specific fields. When you use the Select Tool, you can easily apply modifications such as renaming fields, changing data types (e.g., from string to integer), and selecting or deselecting fields from the incoming data stream. This flexibility makes it an essential tool for data preparation and transformation in Alteryx workflows.

The other tools serve different purposes: the Formula Tool is used for creating or modifying data using expressions, the Join Tool combines datasets based on a common field, and the Filter Tool separates data into two streams based on a specified condition. While they are all helpful in different contexts, they do not provide the specific functionality for changing a data type as the Select Tool does.