Salt deposits form on a car in the winter. over time, the salt covers more of the car.
is the salt alive?
a.
yes, salt deposits are alive because they maintain their structure.
b.
no, salt deposits are not alive because they do not reproduce.
c.
no, salt deposits are not alive because they respond to stimuli.
d.
yes, salt deposits are alive because they exhibit homeostasis.

B. is correct
A. Salt deposits are not alive
C. It is true, salt deposits are not alive but they do not respond to stimuli
and D. salt deposits are not alive and do not maintain homeostasis

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.