Question:

3. Which are flat bones?

a. Vertebrae

b. Ribs and skull  

c. arms legs

d. wrists and ankles

ANSWER:

B. Ribs And Skull

EXPLANATION

Flat bones are made up of a layer of spongy bone between two thin layers of compact bone. They have a flat shape, not rounded. Examples include the skull and rib bones.

For More Information

skull, skeletal framework of the head of vertebrates, composed of bones or cartilage, which form a unit that protects the brain and some sense organs. The upper jaw, but not the lower, is part of the skull. ...

Human ribs are flat bones that form part of the rib cage to help protect internal organs. ... At the front of the body, most of the ribs are joined by costal cartilage to the sternum. Ribs connect to vertebrae at the costovertebral joints. The parts of a rib include the head, neck, body (or shaft), tubercle, and angle

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Explanation:

B ribs and skull po hehe