You want to see a list of all users, groups, and service accounts that have been granted the roles/storage.objectAdmin role in your current project.

Which gcloud command should you use?

The IAM policy contains the bindings that associate members (users, groups, service accounts) with roles. To view who has what role at the project level, you use `gcloud projects get-iam-policy [PROJECT_ID]`. You can then grep or filter the output for the specific role.