To migrate Store configurations from a development sandbox to a QA sandbox, an Administrator shouldUse Data Migration (A)to transfer configuration data and related records between environments.Export Store Configuration (D)is also a crucial step as it allows the Administrator to create a deployable package of the store's settings, which can then be imported into the QA environment.Apply Store Configuration (B)andPublish the Store (C)are actions taken after the configurations have been successfully migrated and are part of the setup process in the new environment, rather than the migration process itself.