Configure trusted hosts.
Trusted hosts restrict administrative access to FortiAnalyzer by limiting the IP addresses or subnets from which administrators can log in.
Use administrator profiles.
Administrator profiles define roles and permissions, restricting what specific administrators can access and manage on FortiAnalyzer.
The other options are not applicable because:
Limiting access to specific virtual domains is not applicable to FortiAnalyzer, as virtual domains (VDOMs) are a concept used in FortiGate, not FortiAnalyzer.
Fabric connectors to external LDAP servers are used for authentication purposes but do not directly restrict administrative access based on roles or IP addresses.