Explanation:

- Social equality: Promotes equal access to healthcare resources. It reduces stress linked to inequality and discrimination, enhancing well-being.

- Public cleanliness: Ensures healthier living environments. Reduces disease spread, particularly in densely populated areas.

- Harmony: Encourages mental well-being. Reduces stress and anxiety through positive relationships and peaceful surroundings.

- Public transport: Provides accessibility to services and opportunities, contributing indirectly to health benefits. However, it is less directly linked to individual health outcomes than the others listed.

The option that is NOT directly important for individual health is:

Option 4: Public transport