What best describes the purpose of water-resistant wallboard?

Water-resistant wallboard is specifically designed to combat mold and moisture, making it an essential material in areas prone to high humidity or water exposure, such as bathrooms, kitchens, and basements. Unlike standard wallboard, water-resistant variants are treated to prevent water penetration, which helps reduce the risk of mold growth and structural damage. This unique feature is crucial because mold can pose health risks and compromise the integrity of buildings.

While some wallboards may contribute to temperature management, aesthetic appearance, or sound insulation in various ways, the primary and most significant function of water-resistant wallboard remains its ability to endure moisture and hinder mold development, which directly addresses concerns associated with wet environments.