Which element should be added to strengthen the writer's position?
a. address counter-arguments
b. establish the significance of the thesis
c. introduce a precise thesis
d. create a logical organization

The right answer for the question that is being asked and shown above is that: "B. Establish the significance of the thesis." the element that should be added to strengthen the writer's position is that B. Establish the significance of the thesis

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.