Final answer:
Pluto is like other Kuiper belt objects because it has a highly eccentric orbit, a dense, rocky surface, and orbits the Sun in the outer solar system.
Step-by-step explanation:
Pluto is considered a Kuiper belt object because it shares several similarities with other objects in the Kuiper belt. Firstly, Pluto has a highly eccentric orbit, meaning its path around the Sun is elongated and not circular like most planets. Secondly, Pluto has a dense, rocky surface, unlike the gas giants in our solar system. Lastly, Pluto orbits the Sun in the outer solar system, along with other Kuiper belt objects.