quizle twhy does active immunity produce long-term immunity better than passive immunity? a.during active immunity, antigens for the disease are presented to the immune system through classical antigen presentation mechanisms, so an active b-cell response and immunologic memory develop. b.active immunity always leads to having the illness though in a milder form than an unvaccinated individual. c.long-term storage of antibodies maintains vaccine integrity; however, antigens cannot be stored long term. d.all of the answers are correct. e.antibodies do not produce long-term immunity because they break down after two weeks.