The United Nations declared 2003 – 2012 as the International Decade for –

Decade to Roll Back Malaria in Developing Countries, Particularly in Africa
First International Decade of the World's Indigenous People
First United Nations Decade for the Eradication of Poverty
United Nations Literacy Decade

The correct answer is: A. Decade to Roll Back Malaria in Developing Countries, Particularly in Africa

The United Nations declared 2003-2012 as the International Decade to Roll Back Malaria in Developing Countries, Particularly in Africa. The goal of the decade was to reduce malaria deaths by 50% and malaria cases by 75% by 2015. The decade was a success, with malaria deaths declining by 60% and malaria cases declining by 50% between 2000 and 2015.

The other options are incorrect. Option B is incorrect because the First International Decade of the World’s Indigenous People was 1995-2004. Option C is incorrect because the First United Nations Decade for the Eradication of Poverty was 1990-1999. Option D is incorrect because the United Nations Literacy Decade was 1990-1999.