Correct Answer - Option 3 : 14 September
The correct answer is 14 September.
- the World Hindi Diwas, the National Hindi Diwas is observed on September 14 every year.
- It recognizes the day when Hindi was adopted as one of the official languages of India by the Constituent Assembly in 1949.
- Apart from Hindi Diwas, World Hindi Day 2020 is observed on January 10.
- The day commemorates the anniversary of the first World Hindi Conference held in Nagpur on January 10, 1975.
14 December - National Energy Conservation Day.
- It is celebrated every year by the Bureau of Energy Efficiency (BEE), under the Ministry of Power.
14 June - World Blood Donor Day.
14 November - Children’s Day.
- It is celebrated to commemorate the birth anniversary of Pt. Jawaharlal Nehru.
- He was born on 14 November 1889.
- Jawaharlal Nehru had immense love, care, and affection for children and so, they call him Chacha Nehru.