Answer:
d. All of the great works of the king have decayed to ruin.
Step-by-step explanation:
The given lines “my name is Ozymandias, king of kings, look on my works, Ye mighty and despair” are ironic because even his statue which is so large has been destructed. It hints on the fact that pride and materialistic power is a temporary thing and it will eventually end. Everything in world is subjected to decadence. This is what happens with Ozymandias and the speeches given by him is a decay.