Abrain-injured soldier returning from combat has developed a short attention span, poor judgment, episodic rage, and diminished verbal skills. these symptoms are attributed to damage in :

A traumatic brain injury or TBI is the result in damage that can be focal, in one area, or diffuse, which can be spread out and affecting more than one area. With the demonstration of short attention span, poor judgement, rage and diminished verbal skills.The areas that have most likely been affected are the VMPC and amygdala . Located in the frontal lobe in the bottom of the hemispheres. 

The correct answer is "  it was believed that the dispute emerged in 632 just after the death of the prophet muhammad."