Explanation
Correct answer: Option D (22 September). World Rhino Day is observed every year on 22 September to raise awareness about all five rhino species and the threats they face from poaching and habitat loss. World Rhino Day was announced by WWF-South Africa in 2010 and became a global event in 2011, thanks to Lisa Jane Campbell of Zimbabwe and Rhishja Cota-Larson of the United States. 3 March is World Wildlife Day, marking the signing of the CITES convention on wildlife trade in 1973. 5 June is World Environment Day, established after the 1972 United Nations Stockholm Conference. 29 July is International Tiger Day, agreed at the St Petersburg Tiger Summit in 2010. Remember: World Rhino Day falls on 22 September, the same date as World Rose Day.