Question

Pluto isn't a planet anymore, because:

• A. It has no water and debris on it.
• B. It is too far from the Sun.
• C. It is too small and isn't nearly round in shape.
• D. It cannot clear the debris off its neighborhood in its orbit.

Answer 1

The correct option is D It cannot clear the debris off its neighborhood in its orbit.

A planet should have three properties: It should be in a proper stable orbit around the Sun. It should be spherical in shape, and it should clear the debris, dwarf planets from the neighbourhood of its orbit. Pluto is however, spherical in shape. However, it couldn't clear the debris off its neighbourhood. So, Pluto is no longer considered a planet.