Question

What is the role of a fuse?

A. A fuse is used to turn lights on and off.
B. A fuse is used to break a circuit when there is too much current.
C. A fuse is used to increase the current in a circuit
D. A fuse is used to create a short circuit.

Answer 1

The correct answer is B. A fuse is used to break a circuit when there is too much current. 
I hope this helps :)

Answer 2

B. A fuse is used to break a circuit when there is too much current.