Answer:
the central idea is what the Statue of Liberty is about
Step-by-step explanation:
in other words: What is the Statue of Liberty? (and they explained what it is)
hope this helped and by the way a central idea is the central, unifying element of the story, which ties together all of the other elements of fiction used by the author to tell the story. so in this case the central idea is what the Statue of Liberty is about