12 February is observed as –

World Vegetarian Day
United Nations Day for South-South Cooperation
Darwin Day
World Smile Day

The correct answer is: A. World Vegetarian Day

World Vegetarian Day is celebrated on February 12 every year. It was founded in 1977 by Louise and Howard Karrer, two vegetarians from the United States. The day is intended to raise awareness of the benefits of vegetarianism and to encourage people to adopt a vegetarian diet.

There are many reasons why people choose to become vegetarians. Some people do it for ethical reasons, as they believe that it is wrong to kill animals for food. Others do it for environmental reasons, as they believe that the meat industry is harmful to the environment. Still others do it for health reasons, as they believe that a vegetarian diet is healthier than a diet that includes meat.

Whatever the reason, World Vegetarian Day is a time to celebrate the many benefits of vegetarianism. It is also a time to learn more about vegetarianism and to consider whether it is the right choice for you.

Here is a brief description of each option:

  • A. World Vegetarian Day is a day to celebrate the many benefits of vegetarianism. It is also a time to learn more about vegetarianism and to consider whether it is the right choice for you.
  • B. United Nations Day for South-South Cooperation is a day to celebrate the cooperation between developing countries. It was established by the United Nations in 1986.
  • C. Darwin Day is a day to celebrate the life and work of Charles Darwin. He was a British naturalist who is considered to be the father of evolutionary theory.
  • D. World Smile Day is a day to promote happiness and goodwill. It was founded in 1999 by Harvey Ball, an American artist who created the smiley face icon.