This doctrine, decided by a number of U.S. Supreme Court cases, has applied most bill of rights protections to the states.
a.
in loco parentis
c.
neutrality
b.
incorporation
d.
nationalization
The answer would be incorporation. In loco parentis has to do with parental rights. Neutrality means being impartial in cases of conflict. Nationalization is a means by which governments grow in power. Hope this helps.