Baby's heartbeat near the end of embryo stage.
- The heart of an embryo starts to beat from around 5–6 weeks of pregnancy
- From the eighth week the unborn child is called a fetus.
What is an embryo?
- After conception, baby begins a period of changes known as the embryonic stage.
- This stage runs from the 5th through the 10th week of pregnancy.
- During this stage, the baby is called an embryo.
- Most organs are form during this stage and later these grows further and develop.
Here, C option is correct.
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