Larry is taking a walk in the park. the pollen in the air makes him sneeze constantly. what line of defense is his immune system exhibiting?1) First line of defense2) second line of defense3) third line of defense4) fourth line of defense
First there is no 4th line of defence in Human body ' There are only 3 lines of defence in the numan immune system And according to me the answer is 1st line of defence. Well, the question is tricky
