Answer:
B. An organ that nourishes a fetus while it grows.
Explanation:
Placenta is an organ that nourishes a fetus while it grows.
B.
The placenta is a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord.
D. The Peyer's patches can release B cells to destroy Listeria
Nueron
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