Exact Extract: Study Guide p.126: threat hunting is a proactive search for suspicious or risky network activity.

Technical Deep Dive: The correct answer is D. Threat hunting is FortiAnalyzer’s proactive investigation workflow. Instead of waiting for an event handler or incident to tell the SOC what happened, the analyst begins with a hypothesis and searches logs for suspicious patterns. FortiView is valuable for visibility but is not, by itself, the named proactive method. Outbreak alerts notify about emerging threats, and the Incidents dashboard manages known incidents. Threat hunting is the feature that best matches proactive network-security management.