The turtle that started first is fastest. The turtle that finished first is fastest. The turtle that took the shortest time is fastest. The turtle that took the longest time is fastest.
I gave my students this multiple choice question: In a turtle race, each turtle walks one a 3-meter track. If the turtles walk one at a time, how can you tell which turtle was fastest?

Only one answer is correct among these 4 choices:
- The turtle that started first is fastest.
- The turtle that finished first is fastest.
- The turtle that took the shortest time is fastest.
- The turtle that took the longest time is fastest.

Could you tell me which one is correct?

The turtle that took the shortest time is fastest.