Final answer:
When current flow is interrupted by a blown fuse, the circuit is disconnected.
Step-by-step explanation:
When current flow is interrupted by a blown fuse, the correct answer is C) Circuit is disconnected. When a fuse blows, it breaks the circuit and stops the flow of current. This is because the fuse is designed to melt when too much current flows through it, thereby disconnecting the circuit and protecting the other components.