Final answer:
An administrator is required to modify access control rules.
Step-by-step explanation:
To modify access control rules, an elevated role known as an administrator is typically required. An administrator is a user with special privileges that allow them to make changes to the access control settings of a system or network. This role is necessary to ensure that only authorized individuals have access to certain resources or perform specific actions.
For example, in a computer network, an administrator can modify access control rules to restrict or grant access to certain folders or files. They can also create user accounts, assign permissions, and manage security settings. Without the appropriate elevated role of an administrator, regular users will not have the necessary permissions to modify access control rules.