1.

Assertion (A) : Receptors are crucial to body's communication process. Reason (R) : Receptors are proteins.

Answer»

ASSERTION and reason both are correct STATEMENT but reason does not EXPLAIN assertion. 
Assertion and reason both are correct and reason EXPLAINS the assertion. 
Both assertion and reason are wrong statement.
Assertion is correct statement reason is wrong statement.

Solution :Assertion and reason both are correct statement but reason does not explain assertion


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