This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Spinal injuries, Subject name: Anatomy
The given test is used for- 
Select and explain. 
A. Ankle injury, B. Hip injury, C. Prolapsed interveabral disc, D. None
C: Prolapsed interveabral disc
Answer: C: Prolapsed interveabral disc 
Explanation: *Straight leg raising (passive SLR) is used for PID (prolapsed interveabral disc). ref : maheswari 9th ed