Which of the following occurs as light travels farther from its source?
a. far from the source, photons spread over a larger area.
b. far from the source, photons come together in a small area.
c. the intensity of light increases as photons move away from the source.
d. the source gives off less light as photons move away from it.

I believe the answer to be 'Far from the source, photons spread over a larger area.' so option A).

mistakes are ok

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )