Assertion :The handle and bristles of a tooth brush should be made of different material. Reason: The handle of a toothbrush should be hard and strong while the bristles should be soft and flexible.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The handle and bristles of a toothbrush are made up of different materials. The bristles are made of nylon and handle is made up of plastic.

Thus, Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Hence, the correct option is $A$

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