The correct answer is Between 1990 and 2015 cut in half the number of people whose income is less than $1.25 a day.
Explanation:
One of the purposes of the UN or United Nations is to support the development of countries, which includes helping countries to increase education, reduce poverty, etc. Moreover, this organization achieves the purposes through specific goals or projects, such as the Millenium Project Goals that were designed to be achieved in 2015.
One of the goals that were successfully achieved was to "cut in half the number of people whose income is less than $1.25 a day". Indeed, according to the UN reports before this project began, there were almost 2 billion people that earned less than $1.25 a day, and by 2015 this was reduced to less than one billion, which shows it decreased to half as the UN aimed.
