2nd October is observed as _____________ .

Correct option is A

2nd October is observed as International Non-Violence Day to commemorate the birth anniversary of Mahatma Gandhi, who was a pioneer of the philosophy and strategy of non-violence.
This day aims to promote the principles of non-violence through education and public awareness, honouring Mahatma Gandhi's contributions to humanity and his advocacy for peace and harmony.
International Day of Non-Violence: October 2nd (Held annually on the birthday of Mahatma Gandhi)
World Social Justice Day: February 20th
World Wildlife Day: March 3rd
International Education Day: January 24th