বিশ্ব জলাভূমি দিবস পালিত হয় ______ ফেব্রুয়ারি। A. 2nd B. 3rd C. 4th D. 5th

World Wetlands Day is observed on 2 February, the anniversary of the Ramsar Convention on Wetlands, signed on 2 February 1971 in Ramsar, Iran.