That would be amygdala of the limbic system. It includes
many parts of the brain among which are hippocampus, hypothalamus, amygdala. Among
these three amygdala is responsible for distributing and deciding where the memories
are stored in the brain and it is believed that is based on the strength of the
emotional response.
D, all of the above. Employees and employers have to pay into social security.
I believe it is known as the "margin of error" (B). Hope this helped!