In which year was the first world environment day observed?

The correct answer is: B. 1972

The first World Environment Day was observed on June 5, 1972, in Stockholm, Sweden, to mark the opening of the United Nations Conference on the Human Environment. The theme for the first World Environment Day was “Only One Earth.”

The United Nations Environment Programme (UNEP) was established at the Stockholm Conference, and it has been coordinating the World Environment Day observance ever since.

The theme for World Environment Day 2023 is “Only One Earth.” This year’s theme calls for collective, transformative action on a global scale to celebrate, protect and restore our planet.

The following are the options for the question:

• A. 1973: This is incorrect because the first World Environment Day was observed in 1972.
• B. 1972: This is the correct answer because the first World Environment Day was observed on June 5, 1972, in Stockholm, Sweden.
• C. 1980: This is incorrect because the first World Environment Day was observed in 1972.
• D. 1974: This is incorrect because the first World Environment Day was observed in 1972.