Using proper body mechanics involves which of the following?

Using proper body mechanics is essential to prevent injury and ensure safety when lifting or moving objects and patients. Holding heavy objects close to your body is the correct approach because it allows you to maintain better balance and reduces the strain on your back and muscles. When the weight of an object is closer to your center of gravity, it requires less effort to hold and carry, which ultimately helps protect your body from potential injury.

Maintaining proper body mechanics also involves other strategies such as keeping a wide base of support with your feet and avoiding certain movements, which is why the other options are not appropriate methods. Twisting at the waist and bending from the waist can lead to back strain, while keeping your feet close together can limit your stability and balance during lifting activities. Thus, holding heavy items close is not only safer but also more efficient when engaging in physical tasks.