Which of the following environmental events is observed by switching off all lights at homes, business establishments, landmarks, and so on for an hour?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Earth Hour.
- Earth Hour is observed by switching off all lights at homes, business establishments, landmarks, and so on for an hour on the last Saturday of March.
- The World Wide Fund for Nature is in charge of organising the event.
- This day is observed annually as a symbol of dedication to the environment.
- On this day, people turn off non-essential electric lights for one hour between 8:30 and 9:30 p.m.
- It began in 2007 as a lights-out event in Sydney, Australia.