What tool would be used to add 5 weeks to a dataset?

The DateAdd tool is specifically designed to manipulate date fields within a dataset by adding a defined time interval to those dates. In the context of adding 5 weeks, the DateAdd tool allows users to specify the date field they want to modify and the interval they want to apply—in this case, 5 weeks. By using this tool, users can efficiently adjust date values, making it ideal for tasks such as calculating due dates or scheduling future events.

The other options, while useful in different contexts, do not serve the purpose of adding time to date fields. For instance, the Join tool is used to merge datasets based on common fields; the Filter tool helps in selecting specific records based on defined criteria; and the Select tool is utilized to choose and rearrange fields within a dataset. None of these options are relevant to the specific action of adding time to a date, which is why the DateAdd tool is the appropriate choice.