Answer:b c a d
omg I did this u want help still
The answer is mole.
Kelvin- temperature
Ampere- electric current
Mole- amount of substance
Pound- mass
<span>d. skin
It protects the body from a lot of places and keeps pathogens from coming in the body. Tears protect the eyes, mucus the nose and saliva the mouth.
Hope this helps :)</span>
I think it is the spleen because I have not seen the options.