A person who has a weakened immune system may not be able to fight against infection because..

pathogens may enter the body and cause illness.
phagocytes many enter the body and cause illness.
normal cells crowd out unhealthy cells.
of an increase in the production of antibodies.

Respuesta :

Vimal1

Answer:

Pathogens may enter the body and cause illness

Explanation:

With a weak immune system, response to any pathogens may be weak as well thus giving them great chance to entire the body and cause illness

Answer:

the answer is A

Explanation: