Question

help

Answer 1

Which of the following types of immunity do you expect would be the most effective in preventing a particular illness for a long period of time and why?
Answer
Active immunity: it allows development of memory cells that can later help fight infection.
Active immunity: it allows the body to gain antibodies from several other outside sources.
Passive immunity: it does not require the body to be subjected to repeated vaccine injections.
Passive immunity: it requires less energy to be expended by the individual overall.

Answer 2

Is it this one:
Active immunity: it allows development of memory cells that can later help fight infection.

Answer 3

long period of time hmm... so you need something that detects the disease whenever it strikes. today, next year, or 20 years later. so developing a memory would a good option i think. what do you think?

its A i believe.