The correct answer is: A. International Day of Forests.
21st March is celebrated as International Day of Forests. It was established by the United Nations General Assembly in 2012 to raise awareness of the importance of forests and to promote sustainable forest management.
Forests play a vital role in the Earth’s ecosystem. They provide us with oxygen, clean water, and food. They also help to regulate the climate and protect biodiversity.
Forests are under threat from deforestation, forest fires, and climate change. It is important to protect our forests so that they can continue to provide us with these essential services.
The other options are incorrect. World Poetry Day is celebrated on 21st March, but it is not celebrated as International Day of Forests. International Color Day is not a recognized international day.