Environmental awareness: World Environment Day—coordinated globally by the United Nations—is observed every year on which date?

Introduction / Context:
World Environment Day is a global platform for public outreach to raise awareness and drive action for the environment. Recognizing the official date helps connect coursework with real-world campaigns and policy milestones.

Given Data / Assumptions:

• The observance is annual and fixed.
• Led by the United Nations Environment Programme (UNEP).
• We must select the correct calendar date.

Concept / Approach:
The commemoration was established following the Stockholm Conference (1972) and has been observed on 5 June each year, focusing annually on a theme such as ecosystem restoration, plastic pollution, or climate action. Countries host rotating main events, but the date remains constant worldwide.

Step-by-Step Solution:
Recall UN observance date: 5 June.Exclude other notable environmental/awareness dates: e.g., April 22 is Earth Day, not World Environment Day.

Verification / Alternative check:
UNEP publications and international campaigns consistently cite 5 June, with global activities, pledges, and educational programs scheduled around that date.

Why Other Options Are Wrong:
December/July/September 5: not the official UN World Environment Day.April 22: Earth Day (broader civil initiative), distinct from the UN observance.

Common Pitfalls:
Conflating Earth Day with World Environment Day; both are important but separate events.

Final Answer:
June 5