Do international audiences usually prefer a presentation that is humorous and informal or one that is serious and formal

The social contact theory states that

Why is it economically necessary for the east germans to build berlin wall

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.