Question

Identify the feature that give human beings the ability to stay in an upright position.

• A. The bones in their head are light
• B. The bones in their legs are strong
• C. They have a tail bone for support
• D. They have an erect vertebral column

Answer 1

The correct option is D They have an erect vertebral column

$\bullet$ The backbone/vertebral column (a part of the skeletal system) provides structural support and balance to maintain an upright posture.
$\bullet$ It also helps transmit the body weight while walking and standing. This gives humans the ability to walk upright.