C. Speed

Speed is a description of how fast an object moves; velocity is how fast and in what direction it moves. In physics, velocity is speed in a given direction. When we say a car travels at 60 km/h, we are specifying its speed. When we say a car moves at 60 km/h to the north, we are specifying its velocity

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#Carry on learning

Answer:

C.speed is the one who tells how fast or slow an objects moves.

Explanation:

Imagine a car moving it is fast.

Imagine a turtle moving it is slow.