Radiology Fetal cardiac activity can be detected earliest by USG at which age of Intrauterine life- A 1-2 week B 2-4 week C 5-6 week D 6-8 week 💡 Explanation Fetal cardiac activity can be detected earliest by USG at which age of Intrauterine life- ✓ Correct Answer: C. 5-6 week