Which does the work of the immune system? a. enzymes b. hormones c. lymphocytes d. neurons

C.Lymphocytes

Reasoning: Lymphocytes- a group of small white blood cell with a single round nucleus.

The definition of the word should tell it, referring to the fact white blood cells are the key to the immune system.

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explanation:

because i added numbers

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .