The correct answer is: D. Squint brick
A squint brick is a brick that is cut to form an angle other than a right angle. It is used to create a variety of architectural effects, such as arches, windows, and doorways.
A queen closer is a brick that is cut to form a right angle and is used to fill the space between two header bricks. A king closer is a brick that is cut to form a right angle and is used to fill the space between two stretcher bricks. A closer is a brick that is cut to form a right angle and is used to fill the space between two bricks of the same type.
Squint bricks are often used in brickwork that is not square or rectangular, such as arches and windows. They can also be used to create decorative effects, such as zigzag patterns.
Squint bricks are typically made from the same material as the other bricks in the wall, but they can also be made from different materials, such as stone or glass.