विश्व पर्यावरण दिवस कब मनाया जाता है? A. 5 अप्रैल B. 15 मई C. 5 जून D. 15 जुलाई

World Environment Day is celebrated every year on 5 June. It was set up by the UN General Assembly in 1972 at the Stockholm Conference on the Human Environment and was first observed in 1974.