The metal used in the production of electrical wires due to its high conductivity is aluminum.

Explanation:
- Electrical wires are used to transmit electricity from one point to another.
- The metal used in the production of these wires plays a crucial role in determining their conductivity and efficiency.
- Among the options provided, aluminum is the metal that is commonly used in the production of electrical wires due to its high conductivity.
- Here's why aluminum is preferred over the other metals:

1. High Conductivity:
- Aluminum has a high electrical conductivity, meaning it allows the flow of electric current with minimal resistance.
- This property is essential for efficient transmission of electricity, as it reduces energy loss and heat generation during the process.

2. Lightweight:
- Another advantage of aluminum is its lightweight nature compared to other metals like iron or lead.
- This makes aluminum wires easier to handle, install, and transport, reducing the overall cost and effort involved in the process.

3. Cost-Effective:
- Aluminum is more abundant and less expensive compared to other metals like copper.
- This makes aluminum a cost-effective choice for the production of electrical wires without compromising on the conductivity and performance.

4. Resistance to Corrosion:
- Aluminum possesses good resistance to corrosion, which ensures the longevity and durability of electrical wires.
- This property is crucial as electrical wires are often exposed to various environmental factors like moisture, heat, and chemicals.

5. Compatibility with Insulation:
- Aluminum wires are compatible with different types of insulation materials commonly used in electrical installations.
- This allows for easy integration and compatibility with existing electrical systems.

Overall, aluminum is the metal of choice for the production of electrical wires due to its high conductivity, lightweight nature, cost-effectiveness, resistance to corrosion, and compatibility with insulation materials.