Detailed Explanation:

The Community Development Programme (CDP), launched in India in 1952, aimed at holistic rural development through participatory action, focusing on improving living standards, agricultural productivity, health, and education.

The core objective was to foster harmonious life by promoting social justice, self-determination, empowerment, and collective action—ensuring communities live peacefully with mutual cooperation and shared progress.

Therefore, harmonious life represents the fundamental goal of community development, making Option 3 the correct answer.