Kinetic energy increases as mass increases and velocity decreases

mass decreases and velocity increases

Both mass and velocity increase.

Both mass and velocity decrease.

C. Both mass and velocity increase
EXPLANATION:
Doubling the mass, doubles the kinectic energy. so it is higher.
Doubling the velocity, Quadruples the kinetic energy.
So Both mass and velocity increase will result in an increase in the kinetic energy

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.