What can the company do to find out how the changes will impact the resources that are running?

Explanations:

Change sets allow you to preview the changes AWS CloudFormation will make to your stack before you execute the update. This includes information about resources that will be created, updated, or deleted, helping you understand the impact of your changes.

Stack policies are used to protect certain resources from being unintentionally updated or deleted during stack updates. While they can provide some insight into what resources might be affected, they do not offer a preview of the changes themselves.

The Metadata section of a CloudFormation template provides additional information about the template and its resources, but it does not indicate how changes will impact the running resources. It does not provide a preview of updates or modifications.

The Resources section outlines the resources defined in the CloudFormation template but does not indicate how updates will impact those resources. It does not provide a comparison of current versus planned resource states.