Final answer:
The caged bird beats its wings because it would rather fly free and be on a swing.
Step-by-step explanation:
Answer
Part A:
The correct answer is A. The bird would rather fly free. In the second stanza of the poem, it can be inferred that the caged bird beats its wings because it wants to be free and fly on the bough a-swing. The bird's beating wings represent its desire for freedom and escape from the cruel bars of the cage.
Part B:
The line from the second stanza that best supports the answer in Part A is: 'When he fain would be on the bough a-swing;'. This line emphasizes the bird's strong desire to be on the bough, swinging freely, instead of being confined in the cage.