The correct answer is A: cell
Answer:
A population consists of all individuals of all species in one area
Plasma cells are designed to churn out Antibodies. These are proteins that have a variable region which is complementary ( perfect shape fit) for the virus' antigen and can therefore bind to the antigen, making the virus harmless or tagging it to be consumed by a phagocyte.
The answer to this is Carbon Dioxide.
