Answer:
The correct answer will be option-D.
Explanation:
According to the International Astronomical Union, a planet must satisfy three criteria to be a planet :
1. It must be an independent object which orbits around a star (in our cosmos-Sun).
2. It must have the mass to have its own gravity which forces it to have
a spherical shape
3. It must be large enough to dominate its orbit as its gravity should clear away any other objects.
Thus, option-D is the correct answer.
