Respuesta :

D

Distance/time
50m/10s
5m/s
So the answer is 5 meters per second
10 seconds, 50 meters

10 seconds 1 second
----------------- = ---------------
50 meters 5 meters

1/5 is .2. Second/meters is second/meters. Combined it is answer A, .2 seconds/meter. The wording in the problem is unusual to be confusing