What permission must be granted to IAM users to allow them to view billing pages in the console?

To enable IAM users to view billing pages in the console, the specific permission required is the ViewBilling permission. This permission is a predefined policy provided by AWS that allows users to access and view billing information and reports.

Granting ViewBilling allows users to see the billing dashboard, view billing incidents, and access detailed bill items. This permission is crucial for effective financial management within AWS since it provides users with visibility into usage and costs associated with their resources.

The other permissions mentioned do not exist as standard policies in AWS for billing access. Therefore, they're not valid choices for viewing billing information. Overall, understanding the specific permissions required for different functionalities within AWS is key for effective management of resources and security considerations.