Active immunity is when an immune response occurs after a germ produces what?\nOptions:\n- (A) harmful substances\n- (B) bioaerosols\n- (C) rapid expansion\n- (D) Allergies\n- (E) anemia\n- (F) it needs them\n- (G) Chemical energy\n- (H) memory cells Let's be accurate as possible.
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Active immunity results when an immune response to a pathogen produces memory cells. Pathogens are germs that cause disease. Active immunity results when an immune response to a germ produces memory cells.
The final answer: (H).
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