Final answer:
The value of n is 0.2.
Step-by-step explanation:
The square root of 0.04 is 0.2. This is derived by finding the non-negative number whose square equals 0.04. The correct choice is A. 0.2, as it accurately represents the numerical result of the square root operation. Options B, C, and D are not equivalent to the square root of 0.04. Understanding square roots involves identifying the number that, when multiplied by itself, equals the given value. In this case, the square root of 0.04 is unequivocally 0.2, providing a concise and precise solution to the mathematical expression.