(B) Given expression is $\frac{\sqrt{0.0009}}{\sqrt{0.01}}$.Using the property $\frac{\sqrt{a}}{\sqrt{b}} = \sqrt{\frac{a}{b}}$,we get $\sqrt{\frac{0.

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(B) Given expression is $\frac{\sqrt{0.0009}}{\sqrt{0.01}}$.Using the property $\frac{\sqrt{a}}{\sqrt{b}} = \sqrt{\frac{a}{b}}$,we get $\sqrt{\frac{0.0009}{0.01}}$.Multiplying numerator and denominator by $10000$ to remove decimals,we get $\sqrt{\frac{9}{100}}$.Calculating the square root,$\sqrt{\frac{9}{100}} = \frac{3}{10} = 0.3$.