Answer:
<h2>C. Cylinder.</h2>
Step-by-step explanation:
When we rotate a rectangle around a vertical axis, we generate a cylinder.
All surface figures that can create a volumetric figure like this case, they are called Surface of Revolution, which is defined as all surfaces created by rotating a curve.
In this case, that curve is a rectangle, which by definition creates a cylinder.
Therefore, the right answer is C.
