Why is a chair with lower back support beneficial during seated work?

Correct answer: To support the natural curve of the lower back

The direct answer is C: lower-back support helps support the natural curve of the lower back. When a person sits, the chair should help keep the spine in a comfortable, balanced posture. The lower back has a natural inward curve, and a suitable support fills the gap behind it. Step by step, this support helps the back remain aligned, reduces slouching and may reduce muscle strain during seated work. It cannot remove every possible pain, but it is ergonomically beneficial when adjusted properly. Option A is wrong because the purpose is health and posture, not making a chair look expensive. Option B is meaningless: support does not hide how long someone sits. Option C is correct because it states the physical purpose of lumbar support. Option D is opposite to good ergonomics; the aim is organized and comfortable work. Memory cue: “Lumbar support supports the lower-back curve.”