Which of the following accurately describes the main reaction that generates the Sun's light? OA.
Iron reacts with oxygen to form iron oxide.
OB. Light reacts with water to form glucose.
OC.
Oxygen reacts with carbon to form carbon dioxide.
OD. Hydrogen nuclei fuse, forming helium and releasing energy.

Bag of bolts weight 29.4n

Ineed more information about  the 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)