For Solid Rocky Worlds, a General Rule Is

Multiple Choice

For solid rocky worlds, a general rule is

A) the larger the world, the closer it is to the Sun
B) the smaller the world, the more likely it is to have an atmosphere
C) the larger the world, the slower it cools off and the more it will keep its internal heat
D) the smaller the world, the more likely it is to have a moon or moons
E) the shorter a world's year (time to orbit the Sun) , the more likely it is to harbor life