Final answer:Velocity and displacement are both vector quantities because they include magnitude and direction, making option c the correct pair of vector quantities.Explanation:The correct answer is c. velocity — displacement. Vector quantities have both magnitude and direction. Velocity is a vector because it describes not only how fast an object is moving but also in what direction it is moving. Displacement is also a vector because it represents the change in position in a certain direction. Therefore, the pair consisting of velocity and displacement is a pair of vector quantities. On the other hand, speed is a scalar quantity because it only has magnitude and no specific direction, and distance is also a scalar for the same reason....

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