Which statement about body mechanics is true?

Which statement about body mechanics is true?

• A. Body mechanics help save energy and prevent injury.
• B. The narrower a person's base of support, the more stable the person is.
• C. Proper alignment of the body means that the two sides of the body should not line up.
• D. Twisting at the waist is the best way to maintain body alignment.

Answer: (A)

Using proper body mechanics means moving and lifting in a way that keeps the spine aligned, uses the strength of the legs and hips, and keeps the load close to the body. This approach saves energy because it engages larger, sturdier muscle groups and avoids putting excessive strain on the back, reducing the chance of injury during daily tasks. That’s why this statement is true: body mechanics help save energy and prevent injury. The other ideas don’t fit because a narrower base of support actually makes you less stable, not more. Proper alignment isn’t about sides not matching; it’s about keeping the body in a neutral, balanced position with joints lined up and a load kept close to the center of gravity. Twisting at the waist is discouraged; you should turn by moving your feet and hips while keeping your back straight to protect the spine.

Using proper body mechanics means moving and lifting in a way that keeps the spine aligned, uses the strength of the legs and hips, and keeps the load close to the body. This approach saves energy because it engages larger, sturdier muscle groups and avoids putting excessive strain on the back, reducing the chance of injury during daily tasks. That’s why this statement is true: body mechanics help save energy and prevent injury.

The other ideas don’t fit because a narrower base of support actually makes you less stable, not more. Proper alignment isn’t about sides not matching; it’s about keeping the body in a neutral, balanced position with joints lined up and a load kept close to the center of gravity. Twisting at the waist is discouraged; you should turn by moving your feet and hips while keeping your back straight to protect the spine.