Answer: A
it's a sign that there might be something causing too much
current to flow in the circuit
Explanation: When a fuse blows, one of the causes may be short circuit. Also, it's a sign that there might be something causing too much
current to flow in the circuit leading to overloading. That is, drawing to much of power that can cause the metal inside the fuse to melt.
Option A is the best answer.