Question

Which characteristic feature helps the human being to walk upright?

• A. Light head bones
• B. Walking with two legs
• C. Absence of tail
• D. Curved backbone

Answer 1

The correct option is D Curved backbone

Curved backbone is unique to humans and helps the human being to walk upright. The lower curved portion of vertebral column absorbs shocks while walking. Vertebral column supports about half of the weight of the body.