Emily and Her Husband Are Thrilled as They Peer into Emily's

Multiple Choice

Emily and her husband are thrilled as they peer into Emily's uterus by means of an ultrasound. The physician reports that the pregnancy appears normal and that their baby's fingers, toes, heart, and circulatory system are developing as expected. The couple is surprised to learn that the baby is only 4 cm long. Given this information, the current stage of prenatal development is the:

A) fetal stage.
B) stage of the zygote.
C) germinal stage.
D) embryonic stage.