please check my answer thanks :)

The state would most likley invoke what
if a child is at risk for abuse or neglect.

my answer is...
Parens patriae

I agree.

http://en.wikipedia.org/wiki/Parens_patriae

Your answer is correct! When a child is at risk for abuse or neglect, the state can invoke a legal doctrine called "parens patriae." This Latin term translates to "parent of the country" and grants the state the authority to act as a parent to protect and provide for the child's best interests. It gives the state the power to intervene, investigate, and in some cases, remove the child from an unsafe environment. Well done on your answer!