Final answer:
To simplify 0.20 as a fraction, you write it as 20/100 and then divide both the numerator and denominator by their greatest common divisor, which is 20, resulting in the fraction 1/5.
Step-by-step explanation:
To write 0.20 as a simplified fraction, you start by writing it as a fraction over 100, because 0.20 is the same as 20 percent, and a percent represents a part out of 100. So 0.20 is written as 20/100. From there, you simplify the fraction by finding the greatest common divisor (GCD) of the numerator and the denominator, which is 20 in this case. Dividing both by 20 you get 1/5. Therefore, 0.20 as a simplified fraction is 1/5. Option D) 1/5 is the correct answer.