You need to fix the PowerPivot data refresh problem by using the least amount of administrative effort. What should you do?

The 'Upgrade Features, Services' option in the PowerPivot Configuration Tool is intended for post-upgrade scenarios to update farm-level features, not to repair existing data refresh configuration problems.

Selecting 'Configure or Repair PowerPivot for SharePoint' instructs the PowerPivot Configuration Tool to diagnose and automatically fix misconfigured components - such as service accounts, timer jobs, and service application settings - that are required for data refresh to function. This is the minimum-effort approach because the tool applies all necessary corrections in a single guided operation without requiring manual navigation through multiple SharePoint Central Administration pages.

Manually creating a target application in SharePoint Central Administration involves multiple configuration steps and addresses only the Secure Store credential aspect, not all potential causes of PowerPivot data refresh failures, requiring more administrative effort.