When concatenating two tables of customer data, what should the business analyst do after selecting Legacy Accounts?

When concatenating two tables of customer data, selecting the option to click Apply is essential to finalize the concatenation process. In this context, clicking Apply ensures that the changes made to the data model are committed, and the two tables are combined appropriately as per the intended logic.

The process of concatenation often involves transforming, renaming, or aligning fields between the two tables so they can be effectively merged. By clicking Apply, the analyst triggers the execution of these transformations and establishes the merged data structure in the data model. This action is crucial as it confirms that the analyst is satisfied with the adjustments made to the tables and is ready to move forward with further analysis or visualization based on the newly combined data.

The other options, while relevant in different contexts, do not directly pertain to the immediate action required after selecting Legacy Accounts for concatenation. Mapping the tables may be part of a preliminary step in the data integration process. Saving the data model would usually come after confirming the changes, and exporting the combined data would be a subsequent action for sharing or reporting purposes. Therefore, clicking Apply is the proper step to ensure that the concatenation takes effect.