Question

within ______ weeks of the pregnancy, the fetus heart begins to beat on its own.
ten
twenty
twelve
four
question 18
1 pts
natural birth, which is the most common, is when the baby is delivered through the ____________.
cervix
prostate
uterus
vagina

Explanation:

For the first question: Fetal heart development shows the heart begins beating on its own around 4 weeks of pregnancy. For the second question: Natural birth involves the baby passing through the vagina.

Answer:

Four
Vagina