Ten students stand in a circle and are told to make a transverse wave. What best describes the motion of the students?

Each student bumps the shoulder of his or her neighbor.
At the exact time, all students take a step to the right.
The students skip clockwise, going in a circular motion.
One at a time, each student lifts his or her hands up and then down.

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.

Ithink it is letter b, i may be wrong but i think that is the answer

When someone eats food