Why is the metallic body of an electric iron connected to the earth wire in a domestic circuit?
a) To complete the return path for current during normal operation, so current can flow through the earth wire.
b) To provide a high-resistance path so that any leakage current is too small to blow the fuse.
c) To provide a low-resistance path so that any leakage current flows directly to the ground, preventing electric shock.
d) To conduct heat away from the heating element and thus keep the iron cooler.