I believe the answer your looking for is the "frontal" lobe, though this is if you just want the lobe of the brain. The frontal lobe is responsible for giving the traits that define our personality and who we are are. If you want to be specific though it is, I think the "Amydalga" is the more specific answer
You could take deep breaths and attempt to solve the problem yourself. You could also talk to someone who has dealt with similar problems in which they can help you solve your's. If that doesn't work, you could talk to your doctor about your stress so that he could prescribe you with a medication or a healthy lifestyle to help you with your stress.
The answer is C because transportation regulation is going to prevent overcrowding and therefore help with good hygiene. this prevents the spread of germs.
It's more accurate, especially since heart rate is almost universally measures in beats-per-minute, than, say, timing your pulse for a [factor of 60] seconds (30 seconds, 20 seconds, 15 seconds, 12 seconds, etc.).
