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Assertion: Before the first microscope was invented around 350 years ago, people were not aware of the living world that was not visible to the naked eye.
Reason: To study about basic structures, a proper use of microscopes and preparation of microscopic slides and staining is essential.

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Both A and R are true, and R is correct explanation of A

A is false but R is true

Both A and R are true, but R is not correct explanation of A

A is true but R is false

answer is B.

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Detailed Solution

Before the first microscope was invented around 350 years ago, people were not aware of the living world that was not visible to the naked eye.

To study about basic structures, a proper use of microscopes and preparation of microscopic slides and staining is essential.

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