Which of these is a plan that offered the constitution convention a proposal for representation?
a. the new jersey plan
b. the washington plan
c. the new hampshire plan
d. the florida plan

It would be the "New Jersey Plan" that offered the constitutional convention a proposal for representation, since this was one of two plans--the other being the "Virginia Plan". 

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.