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 organs, spine, and arms and legs are developing as expected. Given this information, the current stage of prenatal development is the (3 points) embryonic period
germinal period
zygotic period
fetal stage
placenta

The answer is either Embryonic period or Fetal Stage

Explanation:

The placenta is just a sack that gives nutrients to the baby, germinal and zygotic are within the first few weeks of pregnancy, so nothing much has developed. My guess is the fetal stage.

Embryonic Period

Explanation:

Using the acronym ZEF, we can remember what order the stages of development go in:

Zygotic: Lasting only  slightly less than the first two weeks (~10 days) Embryonic: When most things develop, such as the organs, spine, arms & legs
Fetal: When the stomach, facial features, hand & feet develop, with lungs being the last one, the final stage before birth and starting nine weeks in (its also when you become recognizable as human, and you become responsive to sound around the 6th month)

(I also got it right on the test lol, hope this helps)

replace   c   with   a   and simplify.

a = c , b = a, q = n , 2 , a = c , 900 b= a , 700 , q = n , 600 , 2 = b o t h , b = a , q = n