B

Step 1: Understanding the function of a fuse wire. A fuse wire is designed to melt and break the circuit when the current exceeds a certain safe level. This prevents overheating and potential hazards such as electrical fires.
Step 2: Analyzing the requirements for the material of a fuse wire:

• Low Specific Resistance: This ensures that the fuse wire conducts electricity efficiently under normal conditions. A low specific resistance means that the wire can carry the current without significant resistance, allowing it to function properly until it needs to blow.
• Low Melting Point: The fuse wire should melt easily when excessive current passes through it, which will cause an increase in temperature. A low melting point allows the wire to break the circuit quickly in case of overcurrent, preventing damage.

Conclusion: Thus, the ideal material for a fuse wire is one with a low specific resistance and a low melting point to ensure it operates safely.
Therefore, the correct answer is Option B.