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