What is the advantage of overhead cables compared to underground cables in terms of construction?  

The correct answer is 3) "Overhead cables are less expensive to construct."

Explanation:

• Overhead cables, suspended on poles or towers, are generally more cost-effective compared to the installation of underground cables.
• The construction of overhead lines involves simpler and less labor-intensive processes, as it doesn't require extensive trenching, conduits, or insulation.
• In contrast, laying underground cables involves more complex and expensive procedures due to the need for specialized materials, excavation, and careful insulation.
• While underground cables offer benefits like reduced visual impact, the cost advantage of overhead cables makes them a more economical choice for many power distribution projects.