Jira administrators are allowed to create new project roles and update role definitions for an organization managed project.

Jira administrators hold the product administration privileges required to manage project roles across the organization. They can access the global project role configuration and create or modify role definitions that apply to organization managed projects.

Project administrators can manage settings and user assignments within a specific project but they cannot create or edit the global project role definitions that apply across multiple projects.

Site administrators control site level settings and user access across products but they do not automatically have the Jira product permissions required to create or modify project role definitions unless they are also granted Jira administration rights.

All administrators is too vague to be correct because it is not a specific role that is granted the ability to edit organization wide project role definitions.

Full AWS Practitioner Certification Question