Comprehensive and Detailed Explanation:
The goal of forensic analysis in a post-incident scenario is to identify the root cause of the incident. This helps prevent future occurrences and enhances the security posture of the organization.
* Option A (Full picture of risks) is more aligned with a risk assessment rather than forensic analysis.
* Option B (Notifying law enforcement) depends on the situation, but forensic analysis is performed even when legal action is not involved.
* Option C (Further containment) is part of incident response, but forensic analysis happens after containment.
Thus, D is the correct answer, as determining root cause is the key objective of forensic analysis.