Answer: The answer is E). The role of the frontal lobe in mood and personality.
Explanation: Frontal lobe is known to be the control centre of emotions and it helps in motor function, problem solving, spontaneity, memory, language, initiation, judgement, impulse control, and social and sexual behaviour. It is extremely vulnerable to injury due to its location at the front of the cranium, proximity to the sphenoid wing and has a large size.
Phineas Gage who was a railroad construction foreman in the United States had an accident where an iron bar hit him where his frontal lobe is located. When he recovered, he underwent a profound personality change; he started behaving inappropriately in social situations. This is what lead neurologist to conclude that the frontal lobe plays an important role in mood and personality of humans.