Question

Why is Pluto no longer considered a planet?

Answer 1

Answer:
Because of the three IAU laws
Step-by-step explanation:
For any object in space to be considered a planet, it needs to follow the three IAU laws. The first one is that it must be round, the second is that it must orbit a star and that it must clear its neighbourhood of all objects. Pluto follows the first two laws but does not follow the third law.

Answer 2

It has not yet cleared the neighborhood of its orbit in space. Because it does not follow this rule, Pluto is no longer considered a planet.