During which stage of development does the cell mass that develops from the fertilized egg implant itself in the uterine wall

A)  embryonic stage
B)  fetal stage 
C)  germinal stage
D)  fertilization stage

Germinal Stage

The earliest phase of prenatal development, encompassing the first two weeks after conception, during which the fertilized egg divides and implants in the uterine wall.

Embryonic Stage

A phase of prenatal development that occurs from the second to the eighth week after fertilization, during which major body structures and organs begin to form.

Uterine Wall

The muscular and membranous layer surrounding the uterus, which thickens during the menstrual cycle and pregnancy to support fetal development.