The correct answer is: World Environment Day.
World Environment Day is celebrated on 5 June every year. It is a day for people to come together to raise awareness about the importance of protecting the environment. The theme for World Environment Day 2023 is “Only One Earth”.
World Forest Day is celebrated on 21 March every year. It is a day to raise awareness about the importance of forests and the need to protect them. The theme for World Forest Day 2023 is “Forests and Sustainable Production and Consumption”.
World Wildlife Day is celebrated on 3 March every year. It is a day to raise awareness about the importance of wildlife and the need to protect it. The theme for World Wildlife Day 2023 is “Recovering key species for a healthy planet”.
World Population Day is celebrated on 11 July every year. It is a day to raise awareness about the importance of population and the need to manage it sustainably. The theme for World Population Day 2023 is “8 billion: Towards a sustainable future for all”.