A brick is an example of a cube (b) cuboid (c) prism (d) cylinder

a brick is an example of a Cuboid , here’s how:

Since bricks usually have vertises , Cylinder is not an option.
Bricks also do not feature the same dimentions throughout its face area , so it is not a prism either.
Bricks tend to be having more length than breadth , thus the lengths of their sides are not equal.
Hense , the corect option is (b) cuboid.