An administrator wants to simulate threat prevention without impacting traffic.

The correct answer is A. The Monitor profile is used when the administrator wants visibility into what Threat Prevention would detect without actively preventing or blocking production traffic. This is useful during initial deployment, impact assessment, tuning, and staged rollout. Option B, Internal Network, is designed for internal segment protection, not simulation-only behavior. Option C, Guest Network, is designed for guest network traffic protection, not monitor-only simulation. Option D, Strict Security, is a prevention-oriented perimeter profile with stronger enforcement posture, not a non-impact simulation profile. The operational advantage of Monitor is that it lets administrators evaluate logs, detections, false positives, and likely policy impact before switching to an enforcing profile. That makes it a safer rollout choice when the organization needs evidence before prevention is enabled. Reference topics: Autonomous Threat Prevention Profiles, Monitor Profile, staged deployment, detection without enforcement.