Each state retains its sovereignty, freedom and independence, and every power, jurisdiction and right, which is not by this confederation expressly delegated to the united states, in congress assembled.
— article ii, articles of confederation
the powers not delegated to the united states by the constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people.
— 10th amendment, united states constitution
the purpose of each of these provisions is to
(1)determine the division of power between state and central governments
(2)create a process for allowing amendments
(3)grant the central government power to control the states
(4)limit the power of the executive branch

The excerpt mentions central government and the states but does not speak (except by mentioning) of executive branch or amendments, so we reject options 2) and 4).

Among options 1 and 3: 3 speaks of central government having the power over the states, which is the opposite of what the text says: it stresses how much power should stay with the states.

So the correct option is 1)

C4 i’m pretty sure

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.