Fast.
in which sphere of government does policy change historically begin?
local
state
national
international
i have choose both national and state and they were both incorrect.

The correct option is "Local"

The National Government is the main pillar of the State; the authority that directs, controls and administers its institutions, which consists in the general political conduction or exercise of the executive power of the State. In that sense, it is usually understood by such an organ (which can be formed by a president or prime minister and a variable number of ministers) to which the Constitution or the fundamental norm of a State attributes the function or executive power, and which exercises the political power over a society.

letter a is the answer

copernicus finished the first manuscript of his book, "de revolutionibus orbium coelestium" ("on the revolutions of the heavenly spheres") in 1532. in it, copernicus established that the planets orbited the sun rather than the earth. he laid out his model of the solar system and the path of the planets.