Explanation:

- Option 1: 1874

This year does not align with any significant event related to Mahatma Gandhi or the formation of the Natal Indian Congress.

- Option 2: 1894

Mahatma Gandhi did indeed form the Natal Indian Congress in 1894. This organization was created to fight against discrimination and improve the rights of Indians in South Africa.

- Option 3: 1854

This is not related to Gandhi or the formation of the Natal Indian Congress. Gandhi was not even born until 1869.

- Option 4: 1863

Similarly, this year does not have any significance concerning Gandhi's activities or the establishment of an organization in South Africa.