17 May is celebrated as –

World Mathematics Day
World Information Society Day
International Day of Peace
World Car free Day

The correct answer is: A. World Mathematics Day

World Mathematics Day is celebrated on 17 May every year to celebrate the beauty and importance of mathematics. It was first celebrated in 2019, on the 130th birth anniversary of Srinivasa Ramanujan, an Indian mathematician who made extraordinary contributions to number theory, infinite series, and other areas of mathematics.

World Mathematics Day is an opportunity to raise awareness of the importance of mathematics in our lives and to celebrate the achievements of mathematicians around the world. It is also a day to encourage young people to study mathematics and to pursue careers in mathematics and related fields.

The other options are incorrect because:

  • World Information Society Day is celebrated on 17 May every year to raise awareness of the importance of information and communication technologies (ICTs) in promoting social and economic development.
  • International Day of Peace is celebrated on 21 September every year to promote peace and understanding among people of all nations.
  • World Car Free Day is celebrated on the last Sunday of September every year to encourage people to use alternative modes of transportation and to reduce air pollution.