If you need to append data to an existing .xlsx document, which activity should you use?

The correct choice is to use Excel Append Range when the goal is to add data to an existing .xlsx document. This activity specifically allows users to add new rows to an already populated worksheet without disturbing or overwriting the existing data. It efficiently expands the dataset by appending new information at the end of the specified data range, making it ideal for scenarios where maintaining historical or previously entered data is crucial.

In contrast, Excel Write Range is used for writing data to a worksheet but typically overwrites any existing content in the specified range, which is not suitable if the intent is to simply add more data. Excel Read Range serves a different purpose altogether, as it is used to read existing data from the worksheet rather than modifying it. Excel Delete Range is meant for removing data, making it irrelevant in the context of appending data. By utilizing Excel Append Range, users ensure that data integrity is maintained while seamlessly expanding their datasets.