You can’t solve it because you don’t have c in the question
1) If the object changes directions with the same speed, it will be changing its velocity, because velocity is a vector, which depends on both magnitude and direction. Speed is just magnitude regardless of direction.
2) Rotational motion.
I think it’s C) lmk if I’m wrong
Distance can be equal to displacement ... if the motion is all in a straight line ... but distance can never be greater than displacement.