Exam C1000-083 topic 1 question 43 discussion

from the ref. : Roles IBM Cloud IAM access roles allow users and service IDs to complete specific tasks within the context of the target resources that are defined in the policy. There are two types of predefined access roles: platform management and service access. The third type of access role is a custom role that you can create for a service to combine any set of available actions to meet your organizational needs. Platform management roles define allowable actions, such as assigning user access and creation of service instances, for managing resources at the platform level. Platform roles also apply to actions that can be taken within the context of account management services, such as inviting and removing users, managing access groups, managing service IDs, and private catalog offerings.