Answer:
The correct answer is: The caged bird sings; the free bird thinks
Explanation:
We understand a metaphor as a figure of speech which describes something in one way but it's actually the other. In this example, we can see that the metaphor of "the caged bird sings" and "the free bird thinks" it's actually not a literally comparison, as "freedom" is the right every being should have, the fact of "singing" while beem oppresed, refers to the superficial way of seeing things from the outside; whereas, "thinking", gives you the power in many ways to do everything you wish to do with liberty.
