Q:You are presented with the question "What lasts only as long as the proteins that attach to an antigen survive in body fluids?" and the following answer choices: - hospitalization - recovery - parasites - solid, liquid, gas - Leptospirosis - Allergies - resistance - passive immunity Now knowing that passive immunity lasts only as long as the antibodies survive in body fluids and an antibody is a protein that attaches to an antigen, choose the best answer.
A:
passive immunity