The metre bridge wire is made of alloys such as nichrome because they have:

low temperature coefficient of resistance and high resistivity

The correct answer is Option (3) → low temperature coefficient of resistance and high resistivity

Low temperature coefficient of Resistance - This means that the resistance of the wire does not charge when temperature increases due to current flow.

High Resistivity - This is beneficial for the Meter Bridge because it ensures a noticeable voltage drop across the bridge wire.