Concept:Implantation is the biological process where the embryo becomes attached to the uterine lining.
Explanation:After fertilization in the fallopian tube, the zygote undergoes mitotic divisions while moving toward the uterus.
By the blastocyst stage, the embryo reaches the uterus and begins to adhere to the endometrium.
This attachment, known as implantation, allows the embryo to establish a connection with the mother's blood supply.
As a result, the embryo can obtain oxygen and nutrients for continued growth.
The other options are not correct because ovulation is the release of an egg from the ovary, gametogenesis is the formation of gametes, and placentation refers to the formation and structure of the placenta.
Answer:The attachment of the embryo to the wall of the uterus is called
Implantation (Option B).