Urgent need ! why are the states sometimes called the "laboratories of democracy" a).most policy experiments take place on the state level first. b).states are not bound by constitutions to a particular way of doing things so they experiment. c).the federal government experiments with policies by making individual states try things out. d).the term came from the nineteenth century, when state politics were more scientific than the machine politics of cities.

A). Most policy experiments take place on the state level first.

Explanation:

"Laboratories of democracy" is an expression popularized  by U.S. Supreme Court Justice Louis Brandeis in New State Ice Co. v. Liebmann to depict how a "state may, if its citizens choose, serve as a laboratory; and try novel social and economic experiments without risk to the rest of the country." Brandeis was an Associate Justice of the Supreme Court of the United States from 1916 to 1939.

in griswold v. connecticut (1965), the supreme court ruled that a state's ban on the use of contraceptives violated the right to marital privacy.

populist movement, in u.s. history, politically oriented coalition of agrarian reformers in the middle west and south that advocated a wide range of economic and political legislation in the late 19th century. thus in 1892 their leaders organized the populist, or people's, party, and the farmers' alliances melted away.