Which approach should you take?

Your organization wants to control IAM policies for different departments independently, but centrally.

Which approach should you take?
A . Multiple Organizations with multiple Folders
B . Multiple Organizations, one for each department
C . A single Organization with Folder for each department
D . A single Organization with multiple projects, each with a central owner

Answer: C

Explanation:

Folders are nodes in the Cloud Platform Resource Hierarchy. A folder can contain projects, other folders, or a combination of both. You can use folders to group projects under an organization in a hierarchy. For example, your organization might contain multiple departments, each with its own set of GCP resources. Folders allow you to group these resources on a per-department basis. Folders are used to group resources that share common IAM policies. While a folder can contain multiple folders or resources, a given folder or resource can have exactly one parent.

References: https://cloud.google.com/resource-manager/docs/creating-managing-folders