Question

causes by rapid acceleration or deceleration injury of head and neck
wad (whiplash associated disorder)
tension headache
herniated nucleus pulposus
spinal ligament sprain

Explanation:

WAD (Whiplash associated disorder) is specifically caused by rapid acceleration or deceleration injury of the head and neck. Tension headache is usually due to stress - related muscle tension. Herniated Nucleus Pulposus is related to intervertebral disc issues (not typically acceleration - deceleration of head - neck). Spinal ligament sprain can occur in various spinal trauma but is not as specifically tied to head - neck acceleration - deceleration as WAD.

Answer:

WAD (Whiplash associated disorder)