Ineed with ! what happens to the amplitude of a wave as it travels through the spring? full answer

The amplitude of a wave refers to the maximum amount of displacement of a particle on the medium from its rest position. ... So in the end, the amplitude of a transverse pulse is related to the energy which that pulse transports through the medium.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Iagree c would be the answer