When configuring an activation for a Cloud File Storage target, Data Cloud provides an option to set "Preferred Attribute Names." This feature allows a consultant to define custom column headers for the output file that are specific to that activation. This is the correct method for aligning exported attribute names with a target system's naming convention without altering the underlying attribute names in the Data Model Object (DMO), ensuring the data model remains consistent for other uses.

A. Formula fields are used to transform data values within records, not to rename the attribute headers during the export process.

B. Updating attribute names in the data stream configuration is an upstream change that affects how data is ingested and stored, not how it is named upon export.

D. Updating field names in the data model object is a global change that would affect all uses of that attribute, not just a single activation target.

1. Salesforce Help, Create a Cloud File Storage Activation, Step 6: "Select and review contact points and attributes." This section describes the process where you can "Optionally, enter a preferred name for your attributes."

2. Salesforce Developer Documentation, Connect REST API - Activation, Resource: /api/v1/activations, activationAttribute object. The documentation for the API shows a preferredName field, which "Specifies the preferred name for the attribute in the activation target."