​'Earth Day' is celebrated on​

Correct option is B

Earth Day is celebrated annually on April 22nd worldwide to support environmental protection.

• (B) April 22nd: Earth Day. First celebrated in 1970.
• (A) June 5th: World Environment Day.
• (C) September 16th: World Ozone Day.
• (D) May 12th: International Nurses Day.

Correct Answer: (B) 22nd April