Final answer:
The medical assistant's responsibility is to become familiar with medical assistant scope of practice in their state.
Step-by-step explanation:
The correct answer is A) State. The medical assistant's scope of practice varies from state to state, so it is essential for the medical assistant to be familiar with the specific regulations and requirements of the state they are working in. While there may be specialty-specific guidelines and protocols to follow, the primary determinant of the medical assistant's scope of practice is the state they are practicing in.