This section emphasizes that the Philippine government has the responsibility to ensure fairness and equality in the way development and progress are achieved. It means that:1. Equal Opportunities – Development programs, laws, and policies must benefit not only the rich but also the poor, marginalized, and disadvantaged sectors of society.2. Protection of Rights – Workers, farmers, women, indigenous peoples, and other vulnerable groups should be given protection so that they are not left behind in the country’s growth.3. Balanced Growth – Economic progress should not only focus on profit or infrastructure but also on uplifting the quality of life of all Filipinos.4. Comprehensive Scope – “In all phases of national development” means social justice must be considered in politics, economy, education, labor, land reform, and other aspects of national life.In short: This provision requires the government to make sure that development leads to fairness, equality, and upliftment of all sectors of society, especially the underprivileged.