The nurse assesses a client who comes to the clinic with neck stiffness and discomfort. Which finding of the cervical spine should the nurse inquire further about lifestyle habits?

A. Inspection of head and neck is observed in a straight alignment without lateral curves: A straight, well-aligned cervical spine is normal and does not indicate a need for further assessment of lifestyle habits. B. Evaluation of cranial nerve XI (spinal accessory nerve) reveals flexion is maintained against full resistance: This indicates normal strength of the sternocleidomastoid and trapezius muscles, meaning there is no concern related to lifestyle habits. C. Palpation of the spinous processes and surrounding muscles are non-tender: The absence of tenderness suggests that there is no acute inflammation, injury, or muscle strain, making further lifestyle inquiries unnecessary. D. Observation of cervical range of motion reveals flexion and extension is 25 degrees: Normal cervical flexion and extension range from 45 to 90 degrees. A limitation to only 25 degrees suggests restricted mobility, which could be due to poor posture, occupational strain, prolonged screen time, or underlying musculoskeletal conditions.