The correct answer is: World Car Free Day.
World Car Free Day is an annual event that encourages people to give up their cars for one day and walk, cycle, or take public transport instead. It is celebrated on the 22nd of September every year. The aim of World Car Free Day is to raise awareness of the environmental impact of cars and to promote sustainable transportation.
World Turtle Day is celebrated on the 23rd of May every year. It is a day to raise awareness of the threats facing turtles and tortoises, and to encourage people to take action to protect them.
Commonwealth Day is celebrated on the second Monday in March every year. It is a day to celebrate the Commonwealth of Nations, a voluntary association of 54 independent countries that were formerly part of the British Empire.
World Ocean Day is celebrated on the 8th of June every year. It is a day to celebrate the world’s oceans and to raise awareness of the threats they face.