Poverty in South Asia is largely caused by

many factors

Explanation:

Various factors like urbanization, population growth, a decrease in agricultural land and poor policy making are responsible for the increasing food insecurity in Asia. Lack of proper education also causes poverty.

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225