Look at the diagram showing resistance and flow of electrons.

which labels best complete the diagram?
x: high resistance
y: low resistance

z: flow of electrons
x: low resistance
y: flow of electrons
z: high resistance
x: flow of electrons
y: high potential energy

z: low potential energy
x: low potential energy
y: high potential energy

z: flow of electrons

This question is incomplete and not physics but i'm  willing to if you can give a better question

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)