Q.

Assertion: Neurons transmit messages all across different parts of the body.
Reason: Acetylcholine is a neuro inhibitor.

1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true but Reason is false.  
4 Assertion is false but Reason is true  

Ans.

(3)

Acetylcholine is a neurotransmitter, not neuro inhibitor. Thus, assertion is true but reason is false.