Comprehensive and Detailed Explanation:

This scenario follows the Privacy by Design (PbD) principle of “Respect for User Privacy – Keep it User-Centric” because it gives users direct control over their personal data, allowing them to access, modify, and manage their information.

Option A (Proactive, not reactive; preventative, not remedial) emphasizes anticipating privacy risks before they arise, which is not the focus of this feature.

Option B (Full functionality – positive-sum, not zero-sum) refers to integrating privacy protections without sacrificing usability or security.

Option D (End-to-end security – full life cycle protection) relates to safeguarding data throughout its entire life cycle, which is not the main principle demonstrated in this scenario.