What should Ana review if she can only see the Git Promotion Step in her Deployment record?

The correct choice is to review if the Deployment is a Validation Deployment. When Ana can only see the Git Promotion Step in her Deployment record, it indicates that the deployment process did not move beyond this initial step. A Validation Deployment is specifically designed to ensure that the changes could be successfully deployed without actually making any changes to the target environment. In this scenario, it's crucial for Ana to confirm whether the deployment was intended to be a validation-only process, as succeeding in this step would mean the changes are valid but not yet deployed.

The other options do not directly address the reason for only seeing the Git Promotion Step. For instance, Apex tests failing or issues with metadata types could result in a deployment failing, but they would typically present more information in the Deployment record rather than just showing the Git Promotion Step. Additionally, if the User Story isn't properly configured, it could cause complications, but again, the primary context here is focusing on whether this is a validation deployment, which would clarify why the process appears stalled at this point.