The root work is lock the prefix is un meaning not
therefore un-locked means not-locked
You did not put any choices
It is independent because it expresses a complete tought.
The poem "Ozymandias" written by Percy Busshe speaks in a traditional, simple manner how much the human aspiration to their power and material achievements and wealth provides for themselves an eternity. Thinking that their material, earthly power is immortal, tells how much they cheat themselves, in the inability to understand what is eternal. Even the Ozymandias's statue, which is material and transient, is decaying, more durable than them.
The answer is: C.
