Question: Scientists compared Pluto with other objects in the solar system and found that Pluto is smaller than Earth's moon. This finding caused scientists to question whether Pluto is a planet because
Choices:
Pluto gets less sunlight than Earth's moon
the other planets are much larger than Pluto
the other planets have moons and Pluto does not
Pluto rotates on its axis and the other planets do not
Answer: B