The correct answer is: D. 21st October
Haryana Tree Day is observed every year on 21st October. It is a day to celebrate the importance of trees and to raise awareness about the need to plant more trees. The day is also a time to honor the contributions of those who have worked to protect and conserve trees.
Trees are essential for the environment. They provide us with oxygen, clean the air, and help to regulate the climate. Trees also provide us with food, medicine, and shelter. They are an important part of our culture and heritage.
We need to plant more trees to protect our environment and to ensure a healthy future for our planet. We can all do our part by planting trees, recycling, and conserving energy.
Here is a brief explanation of each option:
- A. 15th July is not the correct answer because Haryana Tree Day is observed every year on 21st October.
- B. 17th August is not the correct answer because Haryana Tree Day is observed every year on 21st October.
- C. 20th September is not the correct answer because Haryana Tree Day is observed every year on 21st October.
- D. 21st October is the correct answer because Haryana Tree Day is observed every year on 21st October.