What is proportional method of election​

Doing the text now can someone me

Which statement best completes the diagram of the ways the different branches of government can limit each other's powers?

Because they are located downstream from turkey on the tigris and euphrates rivers, these two nations are anticipating a reduction in water supply, as a result of 22 dams being built by the southeastern anatolia project. the two nations are a) iraq and iran. b) iraq and syria. c) iran and syria. d) saudi arabia and yemen.