The above graph shows the speed of a car over time. during which time period was the car stopped?
a. from t = 2 seconds to t = 5 seconds
b. from t = 5 seconds to t = 10 seconds
c. from t = 13 seconds to t = 16 seconds
d. from t = 21 seconds to t = 25 seconds

The answer is C, as there is not increase or decrease in speed during that time frame.

Question was not very clear if there are specific answer choices tell me and i'll try to you more. hope this though2 laps is 1 min. we know that for each min she does two times the amount of laps. for 12 laps we can do 12/2 which does give us 12 laps in 6 mins not 16 mins.