Question

Harry was seeing a bird fly and was wondering why he cannot. Can you help him find one reason from the following?

• A. Birds have solid bones.
• B. Humans have hollow bones.
• C. Birds have magical powers.
• D. Birds have hollow bones.

Answer 1

The correct option is D Birds have hollow bones.

The bones of birds are hollow reducing their weight and making them fly. These hollow bones have an air filled cavity inside.