Potential energy is the energy an object has because of its

a) temperature.

b) speed.
c) density.

d) location.
e) size.

option D

Explanation:                                    

The correct answer is option D  

Potential energy of an object is because of its location.

 Expression of potential energy      

     P E = m g H                                  

where H is the height of the object.            

           g is acceleration due to gravity, 9.8 m/s²

           m  is the mass of the object.          

Potential energy is directly proportional to the location of the object.    

If the height of the object is more than the potential energy of the object will also increase.                                      

c)as speed changes, wavelength and frequency change.

everything changes!