Final answer:
The three-dimensional figures formed by rotating a two-dimensional figure around the y-axis are cylinder, cone, and sphere.
Step-by-step explanation:
The three-dimensional figures formed by rotating a two-dimensional figure around the y-axis are cylinder, cone, and sphere.
A cylinder is formed by rotating a rectangle around the y-axis. It has two circular bases and a curved surface.
A cone is formed by rotating a right-angled triangle around the y-axis. It has a circular base and a curved surface that tapers to a point.
A sphere is formed by rotating a circle around the y-axis. It has a curved surface and no bases.
The other options, prism and circle, do not result from rotating a two-dimensional figure around the y-axis.