Answer:
D To ensure proper growth, a fertilized egg must implant in the wall of the uterus.
Step-by-step explanation:
This statement correctly describes the fetal development process. After fertilization, the fertilized egg, or zygote, undergoes several stages of development, including cleavage, implantation, and embryonic development. Implantation is a crucial step where the embryo attaches itself to the uterine wall. This allows for the establishment of a connection between the embryo and the mother's blood supply, providing necessary nutrients and oxygen for the embryo's growth and development throughout pregnancy. Proper implantation is essential for the continuation of pregnancy and the subsequent development of the fetus.