Which phrase describes a unit rate? A. \( \frac{3}{2} \) feet for each second B. 2 feet per 3 seconds C. 3 feet for every 2 seconds D. 1 foot for each \( \frac{3}{2} \) seconds

A unit rate is a comparison of two different quantities where one of the quantities is set to one. Among the options, the best choice is A: \( \frac{3}{2} \) feet for each second, because it conveys the measurements in terms of feet per one second. Unit rates are commonly used in real-life situations! For example, if you're filled with excitement to know how fast you can run, calculating your speed in feet per second allows you to compare with others or track improvements. So when you're timing laps at the track, knowing your unit rate can motivate you to reach your personal best!