Which correctly compares the immunity produced by a vaccine with the immunity produced by injection of antibodies from an external source?

Question

anonymous · Answer

Injection of antibodies helps the body develop memory cells, which only produces a temporary immunity, whereas a vaccine can fight infection for years. 

A vaccine helps the body develop memory cells that make immunity last, whereas injection of antibodies only produces a temporary immunity. 

Injection of antibodies helps the body develop its own copies of the antibodies so immunity lasts, whereas a vaccine only produces a temporary immunity.

A vaccine actively attacks pathogens until it is used up so immunity is temporary, whereas injected antibodies will remain passively in the blood, giving immunity for life.

anonymous · Answer

@aaronq

pooja195 · Answer

well which do you think it is any ideas?

anonymous · Answer

B i think

pooja195 · Answer

Some things to consider - vaccines work, essentially, by training our bodies to recognize pathogens. It's like if you have a guard dog, and you know there's a robber that always comes around who smells like corn, and so you train your dog to recognize the smell of corn. Specifically, memory cells in the body learn to recognize the pathogen and make antibodies in response to it. Antibodies do all sorts of things, such as causing the pathogens to clump together to acting as markers for macrophages. Without the memory cells though, the amount of antibodies for a certain antigen in the body would decrease as they are used up / destroyed.

pooja195 · Answer

Now that u have more info which do you think it can be?