Final answer:
To find the percentage of the road the chicken has crossed, divide the distance the chicken has already crossed by the total distance of the road.
Step-by-step explanation:
To find the percentage of the road the chicken has crossed, you need to divide the distance the chicken has already crossed by the total distance of the road and then multiply by 100. In this case, the chicken has crossed 15 feet out of a total of 20 feet:
Percentage = (15 / 20) * 100 = 0.75 * 100 = 75%
Therefore, the chicken has crossed 75% of the road. The correct answer is C. 75%.