Question

The fact that Mercury has no atmosphere is evidence that it _____.

is much farther from the sun than it appears
is composed almost entirely of gases
reflects almost all of the sunlight that strikes it
reflects a small percentage of the sunlight that strikes it

Answer 1

We want to know what does the fact that Mercury has no atmosphere tell us? Since Mercury has no atmosphere it cant reflect a lot of sunlight that is hitting its surface. It is constantly being hit by solar wind. So mercury reflects a small percentage of the sunlight that strikes it.