Final answer:
The correct answer is Concave volume. In mathematics, oblongs, circles, and ovals are all examples of shapes with curved boundaries. Concave volumes have a curving or indented shape, unlike convex volumes which have a bulging or protruding shape.
Step-by-step explanation:
The correct answer is B) Concave volume.
In mathematics, oblongs, circles, and ovals are all examples of shapes with curved boundaries. When a volume is set within these shapes, it is called a concave volume. Concave volumes have a curving or indented shape, unlike convex volumes which have a bulging or protruding shape.
For example, if you imagine a hollow sphere, the empty space inside the sphere would be a concave volume because it curves inward. Similarly, if you imagine a cup or bowl, the space inside the cup or bowl would also be a concave volume.