2 April is celebrated as –

International Children's Books Day
Commonwealth Day
World No Tobacco Day
World Ocean Day

The correct answer is: A. International Children’s Books Day

International Children’s Books Day is celebrated on April 2 every year to promote reading, publishing and the enjoyment of children’s books. It was established by the International Board on Books for Young People (IBBY) in 1967, on the birthday of Hans Christian Andersen, the Danish author of fairy tales such as “The Ugly Duckling” and “The Little Mermaid”.

On this day, IBBY and its member organizations around the world organize a variety of events and activities to promote children’s books and reading. These events may include book fairs, storytelling sessions, author visits, and more.

The goal of International Children’s Books Day is to encourage children to read and to develop a love of reading that will last a lifetime. It is also a day to celebrate the importance of children’s books and the role they play in children’s lives.

Here are some brief descriptions of the other options:

  • Commonwealth Day is celebrated on the second Monday of March every year. It is a day to celebrate the Commonwealth of Nations, a voluntary association of 54 independent countries that were formerly part of the British Empire.
  • World No Tobacco Day is observed on May 31 every year. It is a day to raise awareness about the dangers of tobacco use and to encourage people to quit smoking.
  • World Ocean Day is celebrated on June 8 every year. It is a day to celebrate the world’s oceans and to raise awareness about the threats they face.