consider an electron between the plates of a charged capacitor. the figures below show situations where the potential across the capacitor and the separations between the capacitor plates vary specific values are given in each figure.

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 the answer is c but then again i'm probably wrong

Indoraptor for sure

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained