Why did Supreme Court Justice Brandeis call the states "laboratories of democracy"? What American tradition and value was he affirming?

A. the powers of judicial review given to state and local government officials

B. the ability of states to veto any federal laws that violated their own ideas about democracy

C. the tendency for states to act as champions of research studies and centers

D. the fact that states were allowed to experiment with different approaches to government

D. the fact that states were allowed to experiment with different approaches to government

Explanation:

Justice Louis Brandeis called the states "laboratories of democracy" in the case "New State Ice Co v. Liebmann" and defended that the states of the US were able to serve as a laboratory and try different social and economical experiences without putting the whole country in risk. This happens because the Federalist system gives the States certain autonomy, for example, the legalization of marijuana.

The answer would be D