Question

question: 1
all are required to be considered a planet except...
a must have enough gravity to form a sphere shape
b must travel around a star
c must have a clear orbit
d must have a moon

Explanation:

According to the International Astronomical Union (IAU) definition of a planet, a planet must orbit a star, have enough gravity to form a spherical shape (hydrostatic equilibrium), and have cleared its orbit of other debris. Having a moon is not a requirement. For example, Mercury and Venus have no moons but are still classified as planets.

Answer:

D. Must have a moon