4. What is the production possibilities frontier? A. the line on a production possibilities graph that shows the maximum possible output
B. the line on a production possibilities graph that shows how production increases as new technologies are introduced
C. the points on a production possibilities graph that show the total revenue of an economy
D. the points on a production possibilities graph that show an underutilization of resources

For pro eating sensory information i believe it would be the parietial lobe.

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.