Earth is the third planet from the Sun. What is the approximate astronomical distance in AUs between the Sun and Mars, the fourth planet from the Sun?
A. 0.6
B. 1.5
C. 30
D. 150
Since a AU is the distance between Earth and the Sun (96M miles), we can throw A away since that is closer to the sun than Earth. Since Mars is the fourth planet and we are the third, it would make sense to choose B.
