Final answer:
The legislature can make changes to parish boundaries if parish representatives in legislatures vote for a change.
Step-by-step explanation:
The correct choice is A) if parish representatives in legislatures vote for a change. In the United States, decisions regarding changes to parish boundaries are typically made by the state legislatures, which consist of representatives from each parish. These representatives have the authority to vote for or against changes to parish boundaries. It is important to note that the process may vary from state to state, and specific requirements or procedures may be in place.