Mel is at the obstetrician’s office with his girlfriend denise, who is pregnant with their child. they have just started the ninth week of the pregnancy, and the doctor explains to them that the unborn child’s brain has developed distinct structures and is already beginning to regulate certain body functions. based on what you know about prenatal development, you know that the period of the has just begun. a. zygote. b. embryo. c. umbilicus. d. fetus.

d. fetus

Explanation:

According to my research on studies conducted by various medical professionals, I can say that based on the information provided within the question you know that the period of the fetus has begun. The fetal period is the third stage in prenatal development that takes place between week nine and birth. This is the stage in which many of the body systems will begin to mature.

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the page presents four different kinds of threats that volcanoes pose and what to do before, during, and after an eruption.

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