1.

Assertion(A): Public hygiene is one basic key to the prevention of infectious diseases. Reason(R): Garbage heaps,polluted water,foods exposed to dust and files are the chief sources of disease-Causing organisms. (a) Both A and R are true and R is correct explanation of the assertion (b) Both A and R are true, but R is not the correct explanation of the assertion (c) A is true but R is false (d) A is false but R is true

Answer» ONG>ANSWER:

Both A and B are CORRECT



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