What is a primary use of plywood in construction?

Plywood is primarily used as a subflooring material in construction due to its strength, durability, and ease of installation. As a structurally engineered product, plywood consists of several layers of wood veneer glued together, which provides enhanced stability and resistance to warping compared to solid wood. This layered construction allows it to carry heavy loads effectively, making it an ideal choice for foundational support beneath flooring materials.

Additionally, plywood's versatility and availability in various thicknesses make it suitable for a wide range of applications beyond subflooring, but its prevalent role in creating a solid base for finished flooring surfaces highlights its significance in construction projects. Other materials mentioned in the options do not align with plywood's primary roles, as its properties do not cater to electrical wiring, insulation, or plumbing needs.