Earth Hour, when lights are switched off from 8:30 to 9:30 pm, began in 2007 in:
- AGland, Switzerland
- BParis, France
- CNew York, USA
- DSydney, Australia
Show answer and explanation
Correct answer: (d) Sydney, Australia
Explanation
Earth Hour, a movement of the WWF, began in Sydney in 2007. In 2026 it was on 28 March, with the theme "Give an Hour for Earth".