Answer:
The answer is option A.
A bacterium is a living cell, but a virus is not.
Hope this helps you
The development of the human embryo follows fertilization, and continues as fetal development. By the end of the tenth week of gestational age the embryo has acquired its basic form and is referred to as a fetus. The next period is that of fetal development where many organs become fully developed.
The place in your body is called the Lungs.
