Which option is typically used to ensure a good ergonomic posture while working at a computer?

• A. Sitting on the edge of the chair
• B. Knees lower than hips
• C. Resting feet on a desk
• D. Leaning back with arms raised

Answer: (B)

A good ergonomic posture at a computer is crucial for reducing strain and promoting comfort during extended periods of work. The option indicating that knees should be lower than hips is correct because this position helps to maintain proper alignment of the spine. When the knees are positioned lower than the hips, it encourages a slight bend at the knees and can lead to a more supported lower back. This alignment helps to minimize the risk of developing musculoskeletal problems, which can arise from prolonged improper seating positions.

In contrast, other options may lead to discomfort or strain. Sitting on the edge of the chair can result in poor back support, increasing the risk of slouching. Resting feet on a desk is not advisable as it can lead to improper circulation and discomfort in the legs. Leaning back with arms raised could create tension in the shoulders and neck, leading to discomfort and poor posture over time. Overall, ensuring that the knees are lower than the hips is an effective way to support a healthy and productive working position at a computer.