'Earth Hour 2023' Celebrated across the World on 25 March

Current Context: Every year, people around the world participate in a global event called "Earth Hour", which aims to raise awareness of the challenges of climate change and promote energy conservation.

• The event was first introduced in Sydney, Australia in 2007 by WWF . Earth Hour is also called the "lights off" movement.
• Earth Hour is an annual event that encourages individuals to turn off all lights and electrical appliances at their homes and offices for an hour to promote awareness of climate change challenges and energy conservation. 
• This year, Earth Hour Day was celebrated on March 25. Supporters in more than 190 countries and territories took part in the Earth Hour event this year

Question:

Q.1 What is the purpose of Earth Hour? 

a. To promote awareness of climate change challenges and energy conservation 

b. To celebrate the arrival of spring 

c. To encourage people to use more electricity 

d. To promote the use of fossil fuels