The correct answer is C) child custody.
In some cases concerning child custody, a governor may refuse to extradite a fugitive.
In the United States, the Extradition Clause can be found in Article IV, Section 2, Clause 2 of the US Constitution. Congress had to include the clause to specify the extradition from state to state, and the extradition to other countries. The extradition clause is very strict and only in case of child custody, a governor may refuse to extradite a fugitive.