Explanation:

- Option 1: Multiculturalism

- Multiculturalism is a concept where various ethnic or cultural groups within a society are recognized and celebrated for their unique contributions and coexist under fair and equal terms.

- This promotes diversity and unity by accepting distinct identities and respecting each group's rights and traditions.

- Correct Answer

- Option 2: Secularism

- Secularism ensures that a nation maintains a separation between religion and state affairs.

- It promotes equal treatment of all religions, without favoring any particular faith.

- Option 3: Separatism

- Separatism involves advocating for a separate state or political status for a distinct group.

- It emphasizes division over integration.

- Option 4: Two-Nation Theory

- This theory led to the partition of India and Pakistan, suggesting that Muslims and Hindus were two separate nations.