The administrator of the Universal Containers customer site has been making changes in a sandbox...

To ensure the changes make it accurately to production, the administrator should create a change set, upload it to production, and deploy the change set. A change set is a collection of metadata components that can be moved from oneorg to another. The administrator can use change sets to migrate point-and-click changes, such as custom objects, fields, layouts, and settings, from the sandbox to the production org. The administrator can create a change set in the sandbox, add the components that have been changed, upload it to the production org, and deploy it in the production org.