stopwatch and camera binoculars and tape measure binoculars and camera stopwatch and tape measure
I gave my students this multiple choice question: If a class wants to measure the speed of a bicycle during an outdoor lab exercise, which two devices would be most useful?

Only one answer is correct among these 4 choices:
- stopwatch and camera
- binoculars and tape measure
- binoculars and camera
- stopwatch and tape measure

Could you tell me which one is correct?

stopwatch and tape measure