You must create a new billing account and link it to an existing GCP project. What should you do?

To create a new billing account and link it to an existing project, you need the Project Billing Manager role on the project. This role allows you to manage billing for the project, including associating it with a billing account. After verifying this role, you would create the new billing account. Finally, you would link this newly created billing account to your existing GCP project. The other options are incorrect because: You cannot update a project to link it to an existing billing account if the goal is to create a new billing account. Creating a new project is not required when the objective is to link a new billing account to an existing project. The Billing Account Administrator role is for managing the billing account itself, not for linking projects to billing accounts, which requires Project Billing Manager on the project.