Which of the following does not lend support to the idea that Pluto is a Kuiper-belt object?
A) Pluto has a cometlike composition and density.
B) Pluto is smaller than many known comets, such as Halley's comet.
C) Some Kuiper-belt objects have their own moons.
D) Pluto has a more eccentric orbit than other planets.
E) Some known Kuiper-belt objects are hundreds of kilometers across.

Question

Quizplus · Accepted Answer

The fact that Pluto is smaller than many known comets does not necessarily lend support to the idea that Pluto is a Kuiper-belt object. While some Kuiper-belt objects are smaller than Pluto, size alone is not a defining characteristic of Kuiper-belt objects. The other options all support the idea that Pluto is a Kuiper-belt object: A) Pluto's composition and density are similar to other known Kuiper-belt objects, B) Some Kuiper-belt objects have their own moons, C) Pluto's eccentric orbit is typical of Kuiper-belt objects, and E) Some known Kuiper-belt objects are hundreds of kilometers across, similar in size to Pluto.

Which of the Following Does Not Lend Support to the Idea