Which amendment enabled the supreme court to rule that much of the bill of rights applies to state and local governments?

14th Amendment

Explanation:

The Fourteenth Amendment of United States of America, was adopted in 1868, and it addresses citizenship and rights of citizens. This amendment gives limitation to the actions of state and local governments and those in the acting capacities of such officials. This amendment also gives Supreme Court to rule that much of the Bill of Rights applies to state and local governments.

i would say b. research typically uses a variety of sources