This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Which of the following is responsible for ligament laxity during pregnancy? 
Select and explain. 
A. Estrogen, B. Prolactin, C. Progestrone, D. B hcg
C: Progestrone
Answer: C: Progestrone 
Explanation: Ans c (progestrone) Ref: Sheila Balakrishnan pg 91Progestrone induced relaxation of joints contributes to the changes in posture in pregnancy- Progressive lordosis and waddling gait.