What is the most likely purpose of the following lines?

"half sunk, a shattered visage lies, whose frown, and wrinkled lip, and sneer of cold "

a) to show that ancient sculptors were superior to modern ones in their ability to capture the "passions"
b) to emphasize the desolate nature of the desert
c) to describe the disposition of the person the statue portrays
d) to show that ozymandias was a weak leader none of these