What region is known for containing icy objects and dwarf planets?

The correct choice is associated with the Kuiper Belt, a region of space located beyond the orbit of Neptune, primarily between 30 and 55 astronomical units from the Sun. This area is filled with icy bodies and dwarf planets, including well-known objects like Pluto, Haumea, and Eris. The Kuiper Belt is significant in the study of our solar system because it is home to many small celestial objects that are remnants from its formation, composed primarily of ice, rock, and other materials.

In contrast, the asteroid belt is primarily composed of rocky bodies located between the orbits of Mars and Jupiter, while the inner solar system contains the terrestrial planets and is characterized mainly by rocky planets. The Oort Cloud, although it also contains icy objects, is a theoretical region much farther out than the Kuiper Belt and has not been observed directly. The Kuiper Belt is thus the most accurate choice for a region known for containing icy objects and dwarf planets.