Gynaecology & Obstetrics Embryonic structure, identified earliest on USG, for confirmation of pregnancy is: March 2011, March 2013 A Fetal pole B Fetal Hea activity C Gestation sac D Fetal skeleton 💡 Explanation Embryonic structure, identified earliest on USG, for confirmation of pregnancy is: March 2011, March 2013 ✓ Correct Answer: C. Gestation sac