Final answer:
Option B. is correct. Corner bead is used in drywall construction to reinforce and protect the outside corners of sheetrock, providing a guide for applying joint compound for a smooth finish.
Step-by-step explanation:
Corner bead is used to reinforce the outside corners of sheetrock. This is a material used in drywall construction to protect corners and create a straight, durable finish. The corner bead is typically made of thin metal or plastic, and it's attached to the edges of the sheetrock where two sheets meet at a corner. The corner bead provides a guide to apply joint compound, allowing for a smooth, clean finish that can be painted over or textured as desired. It's an essential component when working with sheetrock to ensure sturdy, professional-looking corners.
The correct answer is B. Corner bead. Corner bead is used to reinforce the outside corners of sheetrock or drywall. It provides a straight and durable edge that helps prevent cracks and damage at the corners. Corner bead is typically made of metal or plastic and is attached to the corner with joint compound and screws or nails.