Question

Which comparison is correct and logical
A. The moon is the most brilliant object in the sky
B. The moon is the briliant object in the sky.
C. The moon is the more brilliant object in the sky

Answer 1

This one is correct and superlative because there are many "objects" in the sky. 
A. The moon is the most brilliant object in the sky

Answer 2

A is the correct answer. Because there are several objects in the sky, the moon would be the ''most" brilliant. It cannot be "the brilliant object" because there are more objects than the moon. Hope this helps!