Explanation:

- The statement highlights the responsibility of individuals towards promoting peace and unity among communities in India.

- Option 1: present—This word doesn’t fit well in the context of ensuring ongoing communal harmony as it implies showing or delivering something.

- Option 2: repair—Communal harmony isn't a physical object that can be repaired. This word implies fixing something broken, which doesn’t fit as well in this context.

- Option 3: maintain—This option is ideal as it suggests actively keeping communal harmony intact over time.

- Option 4: release—This implies letting go of something, which doesn't suit the context of fostering unity and peaceful coexistence.