The compounds shown below are written using the chemical symbols for the elements that they contain. the key shows the names of each element.
key
b = boron
c = carbon
cl = chlorine
h = hydrogen
n = nitrogen
na = sodium
o = oxygen
s = sulfur
which compound could be classified as organic?
a.
bf3
b.
so2
c.
nacl
d.
hcn

I have to say A. BF3 

The answer is HCN, these are organic. So the answer choice would be: D

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.