Oriented strand board (OSB) is most frequently used in which of the following applications?

Oriented strand board (OSB) is primarily utilized in construction as a structural panel due to its strength and versatility. The correct application of OSB is as roof, floor, and exterior wall sheathing. This is because OSB provides a solid substrate that helps distribute loads across a surface, which is essential for maintaining structural integrity.

In roofing applications, OSB offers a robust base for shingles or other roofing materials, ensuring a durable layer that can withstand the elements. When used for flooring, it serves as a critical component in providing support and rigidity, making the floors safe and stable. For exterior walls, OSB sheathing contributes to the overall structural support and is often covered with siding or other materials to provide weather resistance.

Other applications mentioned in the incorrect options, such as interior wall framing and structural beams or tile backing and moisture management, do not leverage the primary strengths of OSB. Interior framing often uses other materials that are more suited for load-bearing applications, while tile backing requires moisture-resistant properties that are typically not ideal in standard OSB products. Therefore, the best fit for OSB use is indeed in roof, floor, and exterior wall sheathing.