Final answer:
The correct answer is Battery-Capacitor Isolation.
Step-by-step explanation:
The correct answer to this question is (b) Battery-Capacitor Isolation. When a capacitor is disconnected from the battery, it is said to be isolated or separated from the battery. In this state, there is no longer a flow of charge between the capacitor plates, and the capacitor retains the charge it had when it was connected to the battery.