Identify the philosophical definition that most accurately aligns with the concept of 'Justice' as enshrined in the Preamble:
1. It primarily focuses on establishing an environment devoid of constraints, enabling the unrestricted development of individual personalities.
2. It mandates the equitable distribution of resources and the absolute eradication of all social, economic, and political disparities among the citizenry.
3. It focuses exclusively on assuring the inherent dignity of every citizen while forging a unified and deeply integrated nation-state.