Final answer:
The Kuiper Belt is incorrectly described in the question; it is actually a disk-shaped region extending about 50 AU from the Sun, not a spherical cloud at 50,000 AU. The Oort Cloud is the spherical region about 50,000 AU from the Sun and is a source of long-period comets, while the Kuiper Belt is the source of short-period comets.
Step-by-step explanation:
The statement that the Kuiper Belt is a large spherical cloud of comets about 50,000 AU from the Sun is false. The Oort Cloud is the vast, spherical shell of icy bodies that lies at the outer edge of our solar system, roughly 50,000 AU from the Sun, and is the source of long-period comets. In contrast, the Kuiper Belt is a disk-shaped region beyond the orbit of Neptune, extending to about 50 AU from the Sun, which is the source of many short-period comets. The Kuiper Belt contains over a thousand objects, including dwarf planets like Pluto, Eris, Makemake, and Haumea, with many more likely to exist.