The correct answer is C because Deployment Manager's Preview feature allows users to see what resources would be created without actually deploying them. This is done by expanding the full configuration, including any templates, and creating a 'shell' deployment. To preview a configuration, you can use the preview query parameter when making an insert() request, such as gcloud deployment-manager deployments create example-deployment --config configuration-file.yaml --preview. This ensures that the company can understand the changes' impact before implementation, aligning with their requirement.