Answer:
D; 100 Feet
Explanation:
There are 60 seconds in 1 minute. Therefore, we are working with 360 seconds.
To find a ratio, we want to divide 360 by 20, which is 18.
There are 3 feet in 1 yard. Therefore, we are working with 1800 feet in total. Since our ratio is 18, we will divide 1800 by 18 to get 100 feet.
Therefore, we are traveling 100 feet every 20 seconds.