Answer : 2. "2 अक्टूबर "
Explanation :

1. Mahatma Gandhi is considered the 'Father' of the Indian nation.

2. In India, Gandhi Jayanti is celebrated on 2 October to commemorate the birth of Mahatma Gandhi.

3. Mahatma Gandhi's ideas about self-reliance and handicrafts were directly linked to his views on industries and industrial society.

4. Gandhiji believed that industrial societies were based on the endless production of goods.