This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Attention and concentration is mediated by: 
Select and explain. 
A. Hypothalamus, B. Frontal lobe, C. Parietal lobe, D. Basal ganglia
B: Frontal lobe
Answer: B: Frontal lobe 
Explanation: Ans. b. Frontal lobe