Gynaecology & Obstetrics A primigravida female at term presents to the clinic with labor pains. Which of the following is a sure sign of labour? A Show B Bag of waters C Cervical effacement D Progressive dilatation of cervix 💡 Explanation A primigravida female at term presents to the clinic with labor pains. Which of the following is a sure sign of labour? ✓ Correct Answer: B. Bag of waters